evo.com | Burton Long Underwear Sets > Cozy meets adventure in the Burton Heavyweight Fleece Base Layer Set. This youth-sized duo transforms from bedtime snuggles to slope-side warmth in a snap. Soft fleece hugs the body like a warm cloud, whisking away moisture to keep you dry and happy. From building snow forts to their first black diamond runs, this set moves with them, never holding them back. Anti-Pilling Fabric Regular Fit DRYRIDE Ultrawick Fleece 96% Recycled Polyester / 4% Spandex 4-Way Stretch | Kid's Burton Heavyweight Fleece Base Layer Set 2026 - X-Large Green | Spandex/Polyester