- Fine merino wool sustainably sourced from the grasslands of Patagonia and blended with Capilene all-recycled polyester for improved wicking, durability and dry time
- 18.9 micron-gauge yarn; jersey-knit construction; slow-washed without chlorine to prevent shrinkage
- Loose double-layer hood, secured by overlap at the collar, with internal neck tape for comfort; locker loop for hang-drying
- Offset shoulder seams eliminate chafing under pack straps
- Full underarm gusset for range of motion and chafe-free comfort
- Elastic thumb loops for secure hand coverage
- Low-bulk merrow seams to minimize chafing; drop tail for more coverage