If your everyday cap doubles as your sweat-stained running buddy, it’s time for the REI Co-op On The Trail cap. Its internal sweatband, side vents and wicking fabric are made for trail runs.
Features
- Elastic polyester fabric fits snug onto your head
- Wicks moisture and dries quickly to help you stay cool and comfortable on the trail
- UPF 50+ sun protection shields from harmful UV rays
- Laser-cut ventilation holes on the sides enhance breathability
- Internal sweatband keeps sweat out of your eyes
- Flexible brim and bungee closure with cordlock let you adjust the fit
- Bungee closure wears softer than traditional cap closures
- One size fits most
Imported.
Technical Specs
| Best Use |
Trail Running |
|---|---|
| Hat Style |
Ball Cap |
| Fabric |
95% polyester/5% elastic |
| Lining Fabric |
Lining: polyester; sweatband: 91% polyester/9% spandex |
| Sun-Protective Fabric |
Yes |
| UPF Rating |
50 |
| Moisture Wicking |
Yes |
| Quick Drying |
Yes |
| Visor/Brim |
Yes |
| Length of Bill |
Unavailable |
| Gender |
Unisex |
Size Chart
| S | M | L | XL | One Size | S/M | L/XL | |
|---|---|---|---|---|---|---|---|
| Head Circumference | 21.5 – 22 | 22 – 22.75 | 22.75 – 23.5 | 23.5 – 24.2 | 21.5 – 23.5 | 21.5 – 23 | 23.25 – 24.25 |
Sizing Notes
All measurements are stated in inches.

























Reviews
There are no reviews yet.