Smartwool Intraknit All-Season Merino Base Layer – Men's gender-women Deep Blue colorway with Safety

Deep Blue colorway with Safety Yellow accents improves visibility on early-morning and low-light runs without extra gear

Built for laid-back days on the water

Lightweight enough to layer under a wind shell or wear solo when temps climb

articulated fit layers cleanly over a baselayer or under a ski shell

Padded shoulder straps and a youth-specific fit distribute load comfortably for growing kids

Smartwool Intraknit All-Season Merino Base Layer – Men's gender-women Deep Blue colorway with SafetyBuilt for high output days in unpredictable conditions, the Intraknit All Season is our top merino base layer pick for serious outdoor athletes. Smartwool's Intraknit construction places mesh ventilation exactly where you run hot, so airflow goes where you need it without sacrificing coverage. Merino's natural odor resistance means you can wear it hard, pack it light, and skip the mid trip laundry. Intraknit construction places targeted mesh