The silhouette is oversized with half sleeves (5-minute sleeves).
The Re-Optimum series leverages photonic technology developed for recovery, making it popular among top athletes across various sports. This collection features T-shirts designed with a cotton-like texture for a casual look. The photonic technology used generates natural warmth sustained by the wearer's body temperature (far infrared rays emitted from the human body). It allows you to maintain warmth that is close to body temperature, necessary for a relaxed and comfortable experience. Different knit structures on the surface and inner side coexist with their respective functions. The surface is made of organic extra-long cotton (100% organic material) knitted in a high gauge, providing a refined luster, drape, and just the right amount of elasticity. The inner side utilizes quick-drying polyester and Solotex, which offers comfortable stretch, resulting in a smooth texture. With a thick feel that's easy to wear alone, it's suitable for all seasons. The silhouette features an oversized fit that looks good on adults, with a half-sleeve (5/8 sleeve) design, making it ideal for both relaxation and everyday wear. *The Re-Optimum series was realized in cooperation with Dr. Norihiro Shimizu, an honorary professor at Osaka Public University, who has over 30 years of research experience in environmental adaptation and sleep within the field of health science.
| Back Length | Width | Back Shoulder Width | Sleeve Length | Hem Width | Cuff Width | |
|---|---|---|---|---|---|---|
| 1 | 70 | 54 | 50 | 26 | 54 | 19 |
| 2 | 72 | 56 | 51 | 27 | 56 | 20 |
| 3 | 74 | 58 | 53 | 28 | 58 | 20 |
| 4 | 76 | 60 | 55 | 29 | 60 | 21 |
| 5 | 78 | 62 | 56 | 29 | 62 | 21 |
All measurements are in (cm).
Because outer measurements are taken by hand, slight variations (about 1–2 cm) may occur depending on the product.
Measurement methods may vary depending on the material, product shape, and whether accessories are included.
To confirm the best fit, we recommend measuring a similar item you own and comparing it with the garment measurements.
Shipping Area
Products are shipped directly from Japan and are currently available for delivery to the United States only via EMS.
Orders with delivery addresses outside the United States will be cancelled. Thank you for your understanding.
Delivery Time
Delivery may be delayed due to customs inspections, natural disasters, or postal strikes.
Shipping Costs
Shipping fees vary by destination and will be displayed at checkout.
Order Tracking
Your tracking number will be included in the dispatch confirmation email.
For U.S. customers, track your order here:
https://tools.usps.com/go/TrackConfirmAction_input
Buyers are responsible for all applicable local, state, federal, and international taxes, including any sales or import taxes related to their order.
Duties and taxes are not prepaid and may be charged by customs upon delivery.
We are unable to declare a lower value or mark orders as gifts on customs forms.
Returns & Exchanges
Returns are not accepted for overseas orders due to customer preferences, including incorrect sizing or personal interpretation of the product.
An exchange or refund will be offered only if the item received is incorrect or has a defect caused by us.
Please contact us within 3 days of delivery, including your order number and a description of the issue. Approved cases will have return shipping covered by us.
Requests for defective item exchanges must be submitted within 5 days of delivery based on the tracking record. Returns will not be accepted without prior email approval.
We Cannot Accept Returns or Exchanges If:
The material feels nice, and the size fits comfortably, making it enjoyable to wear.
If there were more color variations, I would buy several.
It's simple and good. It feels loose when worn, and I like the silhouette.