Made for high-performance outdoorsmen, the REI TrailFlex Merino Wool Leggings offer ultrafine 185 g/m² merino that’s soft against the skin without the itch. These outdoor base layers excel across variable climates, ideal for camping, trekking, skiing, or climbing.
- Ultrafine merino regulates temperature and resists odors for multi-day wear
- Flat seams and merrow stitching eliminate friction and chafing
- Functional fly and gusseted crotch enhance comfort and movement
- Soft waistband with low-profile fit pairs easily with other layers
- UPF 30 protection for added sun safety
Want to extend product life? Here’s how to clean your merino wool leggings: Use wool-safe detergent on gentle cycle, avoid wringing or bleach, and tumble dry low. No need for dry cleaning. Tested from snowy trails to warm valleys across the U.S.
Adrian Holmes (verified owner) –
Used these on a 5-day hiking trip in Yosemite. They’re the best merino wool base layer bottoms I’ve owned — warm without overheating and no chafing!
Melanie Lewis (verified owner) –
I picked these up based on reviews of men’s merino wool base layers, and I’m genuinely impressed. Comfortable fit, great odor control, and packed down small.
Linda Bradley (verified owner) –
Was searching for top-rated men’s merino wool base layers for camping and these exceeded expectations. No stink, quick drying, and super soft after multiple washes.