Smartwool Merino 250 Classic Thermal Base Layer Crew – Kids' Size:XS Back neck mesh trim for

Back neck mesh trim for ventilation

Customize fit with Comfort Cinch 2

while anti-odor treatment keeps things fresh through back-to-back sessions

while the 4 Degree Elite Fit System locks the sock in place so it never bunches or slips mid-run

Soft textured fleece construction holds heat efficiently while staying light enough to wear solo or stack under a shell

Smartwool Merino 250 Classic Thermal Base Layer Crew – Kids' Size:XS Back neck mesh trim forBuilt for cold weather adventures and active kids who run hot and cold at the same time, the Merino 250 is our go to midweight base layer for young athletes. 250g merino wool regulates temperature naturally and fights odor without chemical treatments, so it stays fresh across multiple wears. It works equally well under a puffy on a winter hike or as a standalone layer on chilly morning starts. 250g merino wool weight hits the sweet spot between warmth