Material data base
- Results
-
- Oota
- Banshu
- Seasonless
- Spring / Summer
83Hits
-
NAGORI
IRIS CO., LTD.
- Sustainable raw materials
-
1-c Bio-based chemical fibers/other low impact processes and techniques
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- NAGORI
- date
- 2023/08/04
- Material
-
- Other
- Function
-
- Cool/moisture transmission
- Antibacterial
- Antivirus
- Accessories
- color/design variation available
- Small batch orders available
- Item
-
- Suits
- Jackets
- Coats
- Shirtings
- Sportswear
- Sundry items
- Accessories
- Area
- Oota
A material that proposes a solution to the social problem of coral death due to concentrated seawater, using minerals contained in concentrated water as the main raw material. -
22488
SUNWELL CO., LTD.
- Number
- 22488
- date
- 2024/04/01
- Material
-
- Cotton
- Linen/Rammie
- Mixture
-
- COTTON 70%
- Linen/Rammie 30%
- Woven textile
- Width 130cm
- Length 50m
- Weight 155g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Small batch orders available
- Item
-
- Jackets
- Shirtings
- Pants/Skirts
- Area
- Banshu
-
- Enquiry by e-mail
-
- TEL
- 03-5772-8914
-
OBUV-SERIES
IRIS CO., LTD.
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- OBUV-SERIES
- date
- 2023/08/04
- Material
-
- Other
- Accessories
- Small batch orders available
- color/design variation available
- Item
-
- Jackets
- Coats
- Dresses
- Sundry items
- Accessories
- Area
- Oota
Gorgeous design rubber cast button. -
KYC849 D/#6
UNI TEXTILE CO., LTD.
- Number
- KYC849 D/#6
- date
- 2024/02/07
- Material
-
- Cotton
- Polyester
- Mixture
-
- Polyester 75%
- COTTON 25%
- Function
-
- Easy care
- Woven textile
- Width 110cm
- Length 50m
- Weight 156g/㎡
- Stock service available
- Item
-
- Suits
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Japanese-style clothing (kimono)
- Area
- Banshu
Yarn dyed polyester/cotton cut jacquard -
14374
SUNWELL CO., LTD.
- Sustainable raw materials
-
1-a Organic materials, biodegradable natural fibers
- Number
- 14374
- date
- 2024/01/12
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 110cm
- Length 60m
- Weight 189g/㎡
- Price
- Within 1,000 yen
- Stock service available
- Item
-
- Jackets
- Shirtings
- Area
- Banshu
100%Organic Cotton-
- Enquiry by e-mail
-
- TEL
- 06-6233-1321
-
RR3009
ROKAL Inc.
- Number
- RR3009
- date
- 2024/04/02
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 110cm
- Length 25m
- Weight 170g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Shirtings
- Area
- Banshu
-
3588
KUWAMURA CO., LTD.
- Sustainable raw materials
-
1-a Organic materials, biodegradable natural fibers
- Number
- 3588
- date
- 2024/02/07
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 116cm
- Length 60m
- Weight 129g/㎡
- Price
- Within 1,000 yen
- color/design variation available
- Stock service available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
-
SILICONE-WAPPEN
IRIS CO., LTD.
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- SILICONE-WAPPEN
- date
- 2023/08/04
- Material
-
- Other
- Function
-
- Stretch
- Water-repellent
- Accessories
- Small batch orders available
- color/design variation available
- Item
-
- Sportswear
- Sundry items
- Accessories
- Area
- Oota
A material made by pulverizing and mixing coffee residue and discarded silicone with silicone, which is safe for the human body. -
JAH501
KIYOHARA & CO., LTD.
- Number
- JAH501
- date
- 2024/06/06
- Material
-
- Other
- Mixture
-
- Other 50%
- Accessories
- Stock service available
- Small batch orders available
- color/design variation available
- Item
-
- Jackets
- Coats
- Dresses
- Shirtings
- Accessories
- Area
- Oota
・New and Unique design for front hook
・Scratch-resistant design
・Thread-attached so it can be used with any type of clothing -
RMD3408
KUWAMURA CO., LTD.
- Number
- RMD3408
- date
- 2024/02/07
- Material
-
- Cotton
- Silk
- Mixture
-
- COTTON 70%
- Silk 30%
- Woven textile
- Width 112cm
- Length 60m
- Weight 144g/㎡
- Price
- Within 1,000 yen
- Stock service available
- Small batch orders available
- color/design variation available
- Item
-
- Suits
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Area
- Banshu
It is a washer material that uses bullet noil for the weft thread. Bullet Noil is made by empty spinning the fallen cotton after removing raw silk and silk from the cocoons, and it has a unique uneven -
TRD2017
KUWAMURA CO., LTD.
- Number
- TRD2017
- date
- 2023/08/04
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 116cm
- Length 60m
- Weight 123g/㎡
- Price
- Within 1,000 yen
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
It is a material woven with high density using "SUPIMA", one of the world's leading cotton. The luster and supple texture unique to extra-long cotton produce a high-quality finish. -
8615
SOJITZ FASHION CO., LTD.
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- 8615
- date
- 2023/06/16
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 50m
- Weight 175g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- Small batch orders available
- color/design variation available
- Item
-
- Jackets
- Coats
- Interior
- Sundry items
- Accessories
- Area
- Banshu
Traditional plaid designs on high-dense gabardine made by cotton 30's yarn, which is suitable for outerwear. -
14383
SUNWELL CO., LTD.
- Sustainable raw materials
-
1-a Organic materials, biodegradable natural fibers
- Number
- 14383
- date
- 2024/01/12
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 108cm
- Length 60m
- Weight 160g/㎡
- Stock service available
- Item
-
- Jackets
- Shirtings
- Area
- Banshu
Organic Cotton
Sheer Sucker-
- Enquiry by e-mail
-
- TEL
- 06-6233-1321
-
KM-70460
KAGEYAMA CO., LTD.
- Number
- KM-70460
- date
- 2024/04/01
- Material
-
- Cotton
- Linen/Rammie
- Mixture
-
- COTTON 70%
- Linen/Rammie 30%
- Woven textile
- Width 112cm
- Length 50m
- Weight 105g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Shirtings
- Area
- Banshu
-
KKC555-1
UNI TEXTILE CO., LTD.
- Number
- KKC555-1
- date
- 2024/06/06
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 65%
- Polyester 35%
- Woven textile
- Width 110cm
- Length 50m
- Weight 118g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Jackets
- Dresses
- Pants/Skirts
- Area
- Wakayama
This jacquard is woven in cotton and polyester - it makes less-wrinkle and soft hand feel, and this fabric is made available in two shades -
K-3001
KAGEYAMA CO., LTD.
- Number
- K-3001
- date
- 2024/04/02
- Material
-
- Cotton
- Linen/Rammie
- Mixture
-
- COTTON 76%
- Linen/Rammie 24%
- Woven textile
- Width 108cm
- Length 50m
- Weight 84g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- color/design variation available
- Stock service available
- Item
-
- Shirtings
- Area
- Banshu
-
SBT-015
KUWAMURA CO., LTD.
- Number
- SBT-015
- date
- 2023/08/04
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 66%
- Polyester 34%
- Function
-
- Absorbent/quick-drying
- Cool/moisture transmission
- Woven textile
- Width 148cm
- Length 60m
- Weight 108g/㎡
- Stock service available
- Item
-
- Shirtings
- Area
- Banshu
-
5-1373-1
HOKKOH CO., LTD.
- Number
- 5-1373-1
- date
- 2024/06/06
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 50m
- Weight 308g/㎡
- Stock service available
- Item
-
- Jackets
- Coats
- Shirtings
- Pants/Skirts
- Denim
- Interior
- Sundry items
- Area
- Banshu
Traditional Palaka Check fabric which is high density twill and indigo yarn dyed -
ME19544SSジャガード
MATSUBARA CO., LTD.
- Number
- ME19544SSジャガード
- date
- 2023/10/12
- Material
-
- Polyester
- Nyron
- Mixture
-
- Nylon 47%
- Polyester 44%
- Polyurethane 9%
- Function
-
- Stretch
- Absorbent/quick-drying
- Cool/moisture transmission
- UV protection
- Knitted textile
- Width 150cm
- Length 50m
- Weight 258g/㎡
- Price
- Between 1,501 yen and 2,000 yen
- Stock service available
- Item
-
- Suits
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Sportswear
- Area
- Oota
-
CMP
TAIYO SEN-I CO., LTD.
- Sustainable raw materials
-
1-b Recycled materials/upcycling materials
- Number
- CMP
- date
- 2023/10/12
- Material
-
- Polyester
- Mixture
-
- Polyester 100%
- Function
-
- Absorbent/quick-drying
- Easy care
- Woven textile
- Width 145cm
- Length 60m
- Weight 86g/㎡
- Price
- Within 1,000 yen
- Stock service available
- color/design variation available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
100% polyester fabric with COOLMAX-ALLSEASONS -
KPRO2002
IRIS CO., LTD.
- Sustainable production process
-
2-b No hazardous chemicals
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- KPRO2002
- date
- 2023/08/04
- Material
-
- Other
- Accessories
- Stock service available
- Small batch orders available
- Item
-
- Sportswear
- Sundry items
- Accessories
- Area
- Oota
It is a material with excellent wear resistance and fatigue resistance. It is a lighter material than metal.
A resin buckle that can be easily attached and detached with a simple one-finger action. -
CH-6346
KUWAMURA CO., LTD.
- Number
- CH-6346
- date
- 2024/02/07
- Material
-
- Cotton
- Regenerated fiber
- Mixture
-
- COTTON 52%
- Rayon 48%
- Woven textile
- Width 108cm
- Weight 165g/㎡
- Stock service available
- Item
-
- Shirtings
- Area
- Banshu
-
35490
SUNWELL CO., LTD.
- Number
- 35490
- date
- 2024/04/01
- Material
-
- Cotton
- Mixture
-
- COTTON 99%
- Polyurethane 1%
- Woven textile
- Width 108cm
- Length 60m
- Weight 86g/㎡
- Price
- Within 1,000 yen
- color/design variation available
- Stock service available
- Small batch orders available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
-
- Enquiry by e-mail
-
- TEL
- 03-5772-8914
-
RR6615-K
ROKAL Inc.
- Number
- RR6615-K
- date
- 2024/04/02
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 65%
- Polyester 35%
- Woven textile
- Width 148cm
- Length 50m
- Weight 186g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Jackets
- Coats
- Pants/Skirts
- Area
- Banshu
-
KKC680 D/#1
UNI TEXTILE CO., LTD.
- Number
- KKC680 D/#1
- date
- 2024/02/07
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 50%
- Polyester 50%
- Function
-
- Easy care
- Woven textile
- Width 110cm
- Length 50m
- Weight 109g/㎡
- Stock service available
- Item
-
- Jackets
- Dresses
- Shirtings
- Japanese-style clothing (kimono)
- Area
- Banshu
Dyed polyester/cotton jacquard -
KG-1486
KAGEYAMA CO., LTD.
- Number
- KG-1486
- date
- 2024/04/02
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 35m
- Weight 159g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Dresses
- Shirtings
- Interior
- Sundry items
- Area
- Banshu
-
KYC859-W-1
UNI TEXTILE CO., LTD.
- Number
- KYC859-W-1
- date
- 2024/01/12
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 55%
- Polyester 45%
- Function
-
- Stretch
- Easy care
- Woven textile
- Width 144cm
- Length 50m
- Weight 108g/㎡
- Price
- Between 1,501 yen and 2,000 yen
- Stock service available
- color/design variation available
- Item
-
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Area
- Banshu
It is a stretch jacquard with a staggered pattern.
It is characterized by a textured surface that uses the difference in shrinkage of the yarn. -
4H4441
KUWAMURA CO., LTD.
- Number
- 4H4441
- date
- 2024/02/07
- Material
-
- Cotton
- Linen/Rammie
- Mixture
-
- COTTON 94%
- Linen/Rammie 6%
- Woven textile
- Width 114cm
- Length 60m
- Weight 105g/㎡
- Stock service available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
-
FF1-525
FUJISAKI TEXTILE CO., LTD.
- Sustainable raw materials
-
1-b Recycled materials/upcycling materials
- Number
- FF1-525
- date
- 2024/06/06
- Material
-
- Cotton
- Mixture
-
- COTTON 50%
- Polyester 50%
- Woven textile
- Width 112cm
- Length 50m
- Weight 260g/㎡
- Stock service available
- Item
-
- Jackets
- Coats
- Dresses
- Shirtings
- Interior
- Sundry items
- Accessories
- Other
- Area
- Banshu
-
4H4440
KUWAMURA CO., LTD.
- Number
- 4H4440
- date
- 2023/08/04
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 60m
- Weight 100g/㎡
- Stock service available
- Item
-
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Area
- Banshu
-
AB8796N
IRIS CO., LTD.
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- AB8796N
- date
- 2023/08/04
- Material
-
- Other
- Accessories
- Small batch orders available
- Stock service available
- color/design variation available
- Item
-
- Pants/Skirts
- Sportswear
- Sundry items
- Accessories
- Area
- Oota
Thin and simple cord end made of brass. -
3580
KUWAMURA CO., LTD.
- Number
- 3580
- date
- 2023/08/04
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 60m
- Weight 100g/㎡
- Stock service available
- Small batch orders available
- color/design variation available
- Item
-
- Shirtings
- Area
- Banshu
-
K3001
KAGEYAMA CO., LTD.
- Number
- K3001
- date
- 2024/04/02
- Material
-
- Cotton
- Linen/Rammie
- Mixture
-
- COTTON 76%
- Linen/Rammie 24%
- Woven textile
- Width 108cm
- Length 50m
- Weight 84g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Shirtings
- Area
- Banshu
-
RMD3406
KUWAMURA CO., LTD.
- Number
- RMD3406
- date
- 2024/02/07
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 60m
- Weight 286g/㎡
- Price
- Within 1,000 yen
- color/design variation available
- Stock service available
- Small batch orders available
- Item
-
- Jackets
- Dresses
- Pants/Skirts
- Area
- Banshu
Multi-stripe with multiple colored threads arranged randomly. It is thick and has a good density, so it can be used for pants and jackets. -
14295
SUNWELL CO., LTD.
- Sustainable raw materials
-
1-a Organic materials, biodegradable natural fibers
- Number
- 14295
- date
- 2023/06/16
- Material
-
- Cotton
- Linen/Rammie
- Mixture
-
- COTTON 94%
- Linen/Rammie 6%
- Woven textile
- Width 116cm
- Length 60m
- Weight 130g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Area
- Banshu
Organic Cotton
Washer Finish -
NP7225-1ZH
SANYO SENKO CO., LTD.
- Number
- NP7225-1ZH
- date
- 2024/01/12
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 143cm
- Length 23m
- Weight 340g/㎡
- Small batch orders available
- color/design variation available
- Item
-
- Suits
- Jackets
- Pants/Skirts
- Area
- Bichu/Bingo
Pigmented fabric is coated with foil.
The color of the pigment can be seen through the foil, making it look gold depending on how the light hits it. -
KYC849 D/#7
UNI TEXTILE CO., LTD.
- Number
- KYC849 D/#7
- date
- 2023/08/04
- Material
-
- Cotton
- Polyester
- Mixture
-
- Polyester 75%
- COTTON 25%
- Function
-
- Easy care
- Woven textile
- Width 110cm
- Length 50m
- Weight 179g/㎡
- Price
- Between 1,501 yen and 2,000 yen
- Stock service available
- Small batch orders available
- color/design variation available
- Item
-
- Jackets
- Coats
- Dresses
- Pants/Skirts
- Sundry items
- Area
- Banshu
This is an impactful yarn-dyed jacquard material that expresses the popular diamond lattice pattern with long pile cut jacquard. -
SBT-013
KUWAMURA CO., LTD.
- Sustainable raw materials
-
1-a Organic materials, biodegradable natural fibers
- Number
- SBT-013
- date
- 2023/08/04
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 110cm
- Length 60m
- Weight 145g/㎡
- Stock service available
- Item
-
- Shirtings
- Area
- Banshu
-
14293
SUNWELL CO., LTD.
- Sustainable raw materials
-
1-a Organic materials, biodegradable natural fibers
- Number
- 14293
- date
- 2024/01/12
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 116cm
- Length 60m
- Weight 131g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- Item
-
- Jackets
- Coats
- Shirtings
- Area
- Banshu
100%Organic Cotton
Special Washer Finish-
- Enquiry by e-mail
-
- TEL
- 06-6233-1321
-
PRV57SERIES
IRIS CO., LTD.
- Sustainable raw materials
-
1-c Bio-based chemical fibers/other low impact processes and techniques
- Sustainable production process
-
2-b No hazardous chemicals
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- PRV57SERIES
- date
- 2023/08/04
- Material
-
- Other
- Accessories
- Stock service available
- Small batch orders available
- color/design variation available
- Item
-
- Suits
- Jackets
- Coats
- Sundry items
- Accessories
- Area
- Oota
Material containing biourea and rice bran, which are plant-derived raw materials. -
RR6618
ROKAL Inc.
- Number
- RR6618
- date
- 2024/04/02
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 142cm
- Length 50m
- Weight 125g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Jackets
- Dresses
- Shirtings
- Area
- Banshu
-
RR6619
ROKAL Inc.
- Number
- RR6619
- date
- 2024/04/02
- Material
-
- Regenerated fiber
- Mixture
-
- Rayon 100%
- Woven textile
- Width 114cm
- Length 50m
- Weight 160g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
-
KG-1485
KAGEYAMA CO., LTD.
- Number
- KG-1485
- date
- 2023/10/12
- Material
-
- Cotton
- Polyester
- Regenerated fiber
- Mixture
-
- COTTON 50%
- Polyester 33%
- Rayon 17%
- Woven textile
- Width 112cm
- Length 50m
- Weight 154g/㎡
- Price
- Within 1,000 yen
- Stock service available
- color/design variation available
- Item
-
- Shirtings
- Pants/Skirts
- Sundry items
- Area
- Banshu
-
4H2023
KUWAMURA CO., LTD.
- Number
- 4H2023
- date
- 2024/02/07
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 112cm
- Length 60m
- Weight 130g/㎡
- Stock service available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
-
4H8024
KUWAMURA CO., LTD.
- Number
- 4H8024
- date
- 2024/02/07
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 52%
- Polyester 48%
- Woven textile
- Width 156cm
- Length 60m
- Weight 76g/㎡
- Stock service available
- Item
-
- Dresses
- Shirtings
- Area
- Banshu
-
RICE-BUTTON
IRIS CO., LTD.
- Sustainable raw materials
-
1-c Bio-based chemical fibers/other low impact processes and techniques
- Sustainable corporate social responsibility
-
3 Sustainable corporate social responsibility
- Number
- RICE-BUTTON
- date
- 2023/08/04
- Material
-
- Other
- Accessories
- Small batch orders available
- Item
-
- Suits
- Jackets
- Coats
- Sportswear
- Sundry items
- Accessories
- Area
- Oota
Biomass plastic derived from inedible rice. -
KGM1331
KAWAGOSHIMASA CO., LTD.
- Number
- KGM1331
- date
- 2024/02/07
- Material
-
- Cotton
- Mixture
-
- COTTON 100%
- Woven textile
- Width 116cm
- Length 50m
- Weight 180g/㎡
- Price
- Between 1,001 yen and 1,500 yen
- Stock service available
- color/design variation available
- Item
-
- Suits
- Jackets
- Coats
- Shirtings
- Pants/Skirts
- Accessories
- Area
- Banshu
Sulfide dyeing yarn
Color fading when washed
-
4H2011/2
KUWAMURA CO., LTD.
- Number
- 4H2011/2
- date
- 2023/08/04
- Material
-
- Cotton
- Polyester
- Mixture
-
- COTTON 65%
- Polyester 35%
- Function
-
- Absorbent/quick-drying
- Easy care
- Woven textile
- Width 120cm
- Length 57m
- Weight 107g/㎡
- Stock service available
- Item
-
- Jackets
- Dresses
- Shirtings
- Pants/Skirts
- Area
- Banshu