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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Altra EGO midsole for responsive cushioning
Shape Shield fabric holds its structure through hard sessions and repeated washes
Zero-drop minimalist platform
Raglan sleeves and side-panel construction give babies and toddlers a comfortable fit that layers easily over base layers
The O FIT Insole adds support where most low hikers cut corners
Smartwool Classic Thermal Merino Base Layer Crew – Kids' color-green Altra EGO midsole for responsiveBuilt for active kids who won't slow down when the temperature drops, the Classic Thermal Merino Base Layer Crew is our top pick for cold weather layering. Merino wool naturally regulates body temperature and resists odor, so they stay comfortable from first chair to last run. Flatlock seams cut down on chafing during all day movement. Merino wool construction provides natural warmth without bulk regulates temperature as activity levels change
