evo.com | Burton Long Underwear Sets > Bundle up for big adventures with the Burton Midweight Base Layer Set. This dynamic duo of top and bottom is your little ripper's secret weapon against winter's chill. Breathable fabric wicks away sweat faster than they can say "snow day," keeping them comfy whether they're mastering the bunny slope or building the world's biggest snowman. Just Right Fit Cut for a fit that's not too tight or too loose, for easy layering and full mobility. Midweight Warmth Midweight fabric with soft, chafe-free seams and plenty of stretch feels great and lets kids move naturally. Hidden Thumb Holes HeiQ(R) Odor Control Treatment DRYRIDE Ultrawick Fleece 92% Recycled Polyester / 8% Spandex | Kid's Burton Midweight Base Layer Set 2026 - Small White | Spandex/Polyester