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Pursuing a pattern design that gently wraps around the body for a relaxing feel.
Rio Optimum Sweatshirt (C3fit / Men's)
Ink Black / 1
$176.00
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Rio Optimum Sweatshirt (C3fit / Men's)
$176.00
Shipping calculated at checkout.
The Re-Optimum series utilizes photo-electronic technology developed for recovery, loved by top athletes across various sports. The photo-electronic technology features natural warmth generated by the wearer’s body temperature (far infrared rays emitted from the human body), ensuring sustained comfort. It helps maintain warmth close to body temperature, allowing for a relaxed and pleasant experience. The sweatshirts made from soft pile fabric balance functionality and comfort, with a surface crafted from organic extra-long cotton that offers a smooth texture and clean look. The inner layer incorporates photo-electronic technology and is enhanced with Maxi Fresh to reduce unpleasant odors caused by sweat. The pile is designed using special twisted yarns, creating a fluffy soft touch. The relaxed pattern design envelops the body gently for a comfortable experience. The silhouette offers moderate roominess, and the pivot sleeves provide ease of movement for the arms. With flat seams for a smooth feel against the skin, considerations have been made for comfort. To minimize deterioration over time, polyurethane material is not used. To reduce environmental impact, organic cotton and recycled fibers are incorporated into some materials. Matching sweatpants (model number: GC43342) are recommended for a complete set-up. *The Re-Optimum series was developed with the collaboration of Dr. Kyoe Shimizu, a professor emeritus of Osaka Metropolitan University, who has over 30 years of research in health science related to environmental adaptation and sleep. Re-Optimum - C3fit Technology
Size Chart
| Length | Width | Sleeve Length | Hem Width | Cuff Width | |
|---|---|---|---|---|---|
| 0 | 63 | 54 | 79 | 43 | 19 |
| 1 | 65 | 56 | 82 | 45 | 19 |
| 2 | 67 | 58 | 84 | 47 | 20 |
| 3 | 69 | 60 | 87 | 49 | 20 |
| 4 | 71 | 62 | 89 | 51 | 21 |
| 5 | 73 | 64 | 91 | 53 | 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 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
Features
Looks
1/20
152cm / 1 size
2/20
162cm / 2 size
3/20
162cm / 2 size
4/20
163cm / 2 size
5/20
163cm / 2 size
6/20
163cm / 2 size
7/20
163cm / 2 size
8/20
163cm / 2 size
9/20
163cm / 1 size
10/20
163cm / 2 size
11/20
165cm / 2 size
12/20
170cm / 2 size
13/20
170cm / 2 size
14/20
171cm / 3 size
15/20
171cm / 3 size
16/20
171cm / 2 size
17/20
172cm / 3 size
18/20
173cm / 3 size
19/20
173cm / 3 size
20/20
175cm / 3 size
Reviews
I love the shape and texture!
I really liked the shape and texture, so I purchased it again in a different color!
I was glad I bought the first one in black, but if you wash it roughly, it will start to pill after about three washes. After about five washes, it starts to show the wear of being worn for about two years. Pilling happens quickly if it's not cotton.
Let's wash it gently in a laundry net!
Kenji
Gift
I gave it as a gift for pajamas. They were happy to receive it as it is soft and warm.
M
Materials & Technologies
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GREEN MATERIAL
Materials that are environmentally friendly, such as recycled materials and plant-derived materials.
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Photoelectronic
Photoelectronic refers to fibers that utilize far infrared rays emitted by the body for warmth, achieved through the function of special ceramics. By mixing it with various materials, effective warmth is exhibited.