A cropped length with a relaxed silhouette.
The Re-Optimum series, developed using radiative electron technology for recovery, is designed to blend seamlessly into everyday life with a t-shirt collection favored by top athletes across various sports. The outer surface is made of cotton, giving it a casual appearance. The radiative electron technology harnesses the natural warmth generated by the wearer's body temperature (far-infrared rays emitted from the human body), ensuring lasting warmth. It keeps you comfortably relaxed by maintaining a warmth close to body temperature. The use of different knitting structures on the surface and the skin side allows each function to coexist. The outer layer features a soft cotton (100% organic materials) for a natural texture. The inner layer employs quick-drying polyester and comfortable, stretchy Solotex, enhancing both feel and wearability. This thicker fabric is easy to wear alone and suitable for all seasons, boasting a relaxed silhouette with a cropped length and long sleeves. Designed for both relaxation and town use, this piece easily fits various settings. *The Re-Optimum series was developed in collaboration with Dr. Yoshinaga Shimizu, a professor emeritus at Osaka Public University, who has spent over 30 years researching environmental adaptation and sleep in the field of health and medical science.* *This is a women's model designed with patterns tailored to the female body shape.*
| Length | Width | Back Shoulder Width | Sleeve Length | Hem Width | Cuff Width | |
|---|---|---|---|---|---|---|
| 2 | 56 | 57 | 52 | 53 | 51 | 9 |
| 3 | 58 | 59 | 54 | 55 | 53 | 9 |
| 4 | 60 | 61 | 56 | 56 | 55 | 9 |
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: