What is the 'Kokochi Lab' series?

It is Shimamura's innerwear series made with sustainable materials cultivated through eco-friendly methods, based on the concept of comfort for both the Earth and daily life.

What are the features of the new innerwear?

Smooth and soft 'TENCEL™ fiber material' has been newly added, and the existing cotton material has been upgraded for greater flexibility and a 'doughy' soft touch.

What kinds of products are available?

Products include women's innerwear, innerwear with cups, and half tops, as well as men's 2-pack innerwear (short sleeves and sleeveless), available at stores nationwide.

Shimamura Improves the Texture of Private Brand 'CLOSSHI' 'Kokochi Lab' Innerwear! Introducing New Soft TENCEL™ Fiber Material

Published Apr 3, 2026 6:10 PM ・ Updated Jun 2, 2026 1:01 PM ・ 7 min read ・ Source: PR TIMES

Shimamura Co., Ltd. has updated its private brand 'CLOSSHI' innerwear series 'Kokochi Lab' with improved textures, featuring new items made from smooth and soft TENCEL™ fibers alongside upgraded cotton materials, available at Fashion Center Shimamura stores nationwide.

Shimamura Co., Ltd. (Headquarters: 1-602-1 Kitabukuro-cho, Omiya-ku, Saitama City, Saitama Prefecture; Representative Director: Iichiro Takahashi) will sell products with improved textures for the private brand 'CLOSSHI' 'Kokochi Lab' innerwear, along with new products using 'TENCEL™ fiber material', at Fashion Center Shimamura stores nationwide.

*TENCEL™ is a trademark of Lenzing AG.

About 'Kokochi Lab' 'Kokochi Lab' is a series that uses sustainable materials based on the concept of 'comfort' that is pleasant for both the earth and our daily lives. Using materials cultivated through sustainable production methods, these are eco-friendly sustainable products.

▼ Click here for the 'Kokochi Lab' special feature page https://www.shimamura.gr.jp/shimamura/sp/kokochilab/

Features of 'Kokochi Lab' Innerwear 'Kokochi Lab' innerwear is an innerwear series that focuses on a texture with a great feel. This season, we are newly adding the smooth and exceptionally soft 'TENCEL™ fiber material' to our lineup. In addition, the 'cotton material' for women's innerwear, which was well-received last year, has been updated to be more flexible, providing a 'doughy' and soft touch.

Women's Product Lineup We offer products using 'TENCEL™ fiber material' and 'cotton material'.

### Women's Innerwear Sizes: S, M, L, LL, 3L, 4L, 5L (Available sizes vary by color and type.) Prices: S-LL: 649 yen (tax included), 3L-5L: 759 yen (tax included)

### Women's Innerwear with Cups Sizes: S, M, L, LL, 3L, 4L, 5L (Available sizes vary by color and type.) Prices: S-LL: 979 yen (tax included), 3L-5L: 1,089 yen (tax included)

### Women's Half Top Sizes: S, M, L, LL, 3L, 4L, 5L (Available sizes vary by color and type.) Prices: S-LL: 869 yen (tax included), 3L-5L: 979 yen (tax included)

Men's Product Lineup We offer products using 'TENCEL™ fiber material'. Short sleeves (crew neck, V-neck) and sleeveless (V-neck) options are available.

### Men's 2-Pack Innerwear Sizes: M, L, LL (Available sizes vary by color and type.) Prices: M-LL: 1,199 yen (tax included)

About CLOSSHI 'CLOSSHI' is Shimamura's private brand with a particular focus on materials and construction. Imagining the 'joy of choosing today's fashion from the closet' and based on the concept of 'everyday life you can truly feel', we focus on comfort in wearing, using, and touching, supporting a 'richer' and 'more enjoyable' life. There is a reason for that comfort.

About 'Shima Eco' 'Shima Eco' is the environmental initiative within the Shimamura Group's sustainability activities. The Shimamura Group conducts sustainable activities for the environment, such as reducing waste, reusing resources, and creating eco-friendly products. In addition, the 'Shima Eco' logo, designed with the motifs of 'Earth' and 'Circulation', expresses our desire to protect the environment and create a sustainable society.

Shimamura Group Official App & SNS https://www.shimamura.gr.jp/sns/

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Contact Information <For interviews and public relations> Inquiry Form: https://www.shimamura.gr.jp/faq/contact <For other inquiries> Main Phone: 048-631-2111 (Reception hours: Weekdays 10:00-17:00)

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Source: PR TIMES
Category: News

Shimamura Improves the Texture of Private Brand 'CLOSSHI' 'Kokochi Lab' Innerwear! Introducing New Soft TENCEL™ Fiber Material

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