Left and right side pockets
This short-sleeve active insulation adjusts the internal temperature of your clothing according to your activity level. It features 'Ventrix,' a breathable and stretchable synthetic insulation with slits that are strategically placed on the shoulders to encourage ventilation during activity and enhance warmth when resting. The underarm area is designed without insulation to promote breathability. The exterior is made with 'Pertex Quantum Air,' which combines breathability with wind resistance, working synergistically with 'Ventrix' to keep your internal temperature comfortable by preventing overheating. Its casual crew neck design makes it easy to layer and is suitable for various activities, from indoor training to outdoor adventures.
| Length | Width | Shoulder Width | Sleeve Length | Hem Width | |
|---|---|---|---|---|---|
| WM | 64 | 52 | 39 | 25 | 48 |
| WL | 66 | 54 | 41 | 26 | 50 |
| S | 70 | 53 | 41 | 25 | 48 |
| M | 72 | 55 | 43 | 26 | 50 |
| L | 74 | 57 | 45 | 27 | 52 |
| XL | 76 | 59 | 46 | 28 | 54 |
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:
I bought this for my bicycle commute during the upcoming season, although it is intended for running. After about an hour into my nearly 2-hour bike ride with a backpack, I start to feel overheated, but since it's a half-zip type, it's easy to ventilate, which was very good. Also, since it has insulation, I hardly feel the cold when I start pedaling, and as the cold increases, it seems like I'll use it more frequently. Its quick-drying properties were perfect‼️
I had been running in the Ventrix Trail Jacket, but there were times when I couldn’t tell if I was too hot or too cold. However, this kept me at a comfortable temperature while allowing me to keep running without overheating. Since it gets soaked, I definitely have to wash it, so I’m worried about its durability.