Bonmax Co., Ltd. and Spiber have joined forces to create a collaborative T-shirt that blends Bonmax’s expertise in uniforms and business wear with Spiber’s next-generation protein material, Brewed Protein™ fiber. Developed under the concept “Freedom in styling. The ultimate basic wear for all seasons” this product marks a step toward enabling more people to experience the comfort and character of the cotton × protein blend in everyday wear. To commemorate the launch, a Spiber Logo Tee and a special Spiber Design Tee are also available. The products can be purchased via Spiber’s official LINE account (Japan only).

Features of Spiber Tee 001

• Premium, skin-friendly comfort: The T-shirt uses an ultrafine 14-micron grade Brewed Protein™ fiber blended at 7%, paired with 93% single-origin Australian cotton (“HASE-1”). Traceability is ensured throughout all stages from raw cotton sourcing to spinning, knitting, and sewing. The 40-count twin yarn, produced using technology by Hasetora Spinning and knitted at high density on a 24-gauge machine, results in a fabric boasting both softness and structure.
  
  
• Meticulous pattern design, sewn with cotton thread: The sleeve, side, and neckline patterns are precisely designed to the single degree and millimeter. Sewing is done with cotton thread rather than polyester, requiring skilled workmanship to achieve durability and comfort. The sleeve hems feature a tenchi-biki finish for a smooth and refined appearance.
  
  
• Natural odor control: The material neutralizes ammonia and acetic acid, helping suppress odor at its source. The effect continues even after repeated washing (based on JIS standard tests; actual effectiveness may vary based on usage environment).
  
  
• Next-generation production and distribution: Brewed Protein™ fiber is manufactured in Tsuruoka, spinning and knitting take place in Bishu, dyeing and finishing in Osaka, and sewing in Kumamoto, resulting in a product fully made in Japan. Bonmax maintains inventory of the blank T-shirt body, enabling small-lot ordering starting from one piece, and also supports secondary processing such as sublimation printing and embroidery. This approach moves away from mass-production and aims to deliver products only when and where they are needed.
  
  

Product lineup:

• Spiber Tee 001 with Brewed Protein™: JPY 9,900 (incl. tax) + shipping
• Spiber Logo Tee 001 with Brewed Protein™: JPY 11,000 (incl. tax) + shipping
• MR DQ Tee 001 with Brewed Protein™: JPY 11,000 (incl. tax) + shipping

Colors: White/Black
Sizes: S/M/L/XL
Material: 93% cotton, 7% Brewed Protein™ fiber

This T-shirt brings together everyday comfort and a commitment toward a more sustainable future. We invite you to make it a staple in your daily wardrobe.

How to purchase:

This product can be conveniently purchased through Spiber’s official LINE account (available only in Japan).

1. Scan the QR code below or click the link.
2. Add Spiber’s official LINE account as a friend.
3. Purchase via the store menu in the LINE chat screen.

Click here to add official LINE account