1/10
160cm / 0 size
Rio Optimum Paper Long Sleeve T-Shirt (C3fit / Unisex)
Grayish White / 1
$135.60
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Rio Optimum Paper Long Sleeve T-Shirt (C3fit / Unisex)
$135.60
Shipping calculated at checkout.
The Re-Optimum series, developed using photonic technology for recovery, is a collection favored by top athletes across various sports. The unique feature of the photonic technology used is that it harnesses the body's own temperature (far-infrared rays emitted from the human body) to provide lasting natural warmth. This allows you to maintain a warmth that is 'close to body temperature,' essential for relaxing and staying comfortable. The apparel, made from highly moisture-absorbent paper yarn fibers, has excellent skin separation and a dry feel, making it perfect for hot and humid summer conditions. It is blended with cotton and polyester for a soft finish. It is also appealing because it remains comfortable even when there are significant temperature changes between the hot outdoor climate and air-conditioned indoor environments. The long-sleeve T-shirt features a relaxed, slightly loose silhouette. The collar is designed to resist warping after multiple washes and follows the fabric's stretch. It’s perfect not only as loungewear but also as a comfortable outfit for post-sport transitions. From the Spring/Summer 2024 model, the cotton portion uses organic cotton (100% organic material). *The Re-Optimum series has been made possible with the collaboration of Dr. Yoshinaga Shimizu, an honorary professor at Osaka Metropolitan University, who has conducted over 30 years of research in the fields of health and medical science, focusing on environmental adaptation and sleep.
Size Chart
| Front Length | Back Length | Width | Back Shoulder Width | Sleeve Length | Hem Width | Cuff Width | |
|---|---|---|---|---|---|---|---|
| 0 | 64 | 67 | 52 | 44 | 58 | 52 | 8 |
| 1 | 66 | 69 | 54 | 46 | 60 | 54 | 9 |
| 2 | 68 | 71 | 56 | 47 | 62 | 56 | 9 |
| 3 | 70 | 73 | 58 | 49 | 64 | 58 | 10 |
| 4 | 72 | 75 | 60 | 51 | 65 | 60 | 10 |
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 Policies
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
- Processing time: 5–10 business days
- Shipping time: 7–14 business days
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
Taxes
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.
Refund Policies
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 request is due to personal reasons
- Import duties or taxes are refused
- More than 3 days have passed since delivery
- The item has been worn, used, or washed
- The item has odors, stains, or damage caused by use
- Original accessories, packaging, or boxes are missing
- The item has been altered or repaired
- The item was purchased as a sale or discounted product
Looks
2/10
160cm / 2 size
3/10
160cm / 2 size
4/10
163cm / 1 size
5/10
163cm / 3 size
6/10
163cm / 3 size
7/10
165cm / 2 size
8/10
175cm / 2 size
9/10
179cm / 4 size
10/10
180cm / 4 size
Reviews
Thin and comfortable
I was looking for pajamas that are suitable for sleeping in a cooled room during the summer, and I thought this would be perfect, so I purchased it. It has a loose silhouette, a nice texture, and is thin and comfortable. I also bought the long pants from the same series, so I can sleep well with the set.
KJH
Simple
Simple and good
ao
Materials & Technologies
1/2
GREEN MATERIAL
Materials that consider the environment, such as recycled materials and plant-derived materials.
2/2
Photoelectronic
Photoelectronic refers to fibers that utilize far-infrared rays emitted by the body through the function of special ceramics to provide warmth. By mixing it with various materials, effective warmth retention is achieved.