What Our Gearhead(R) Experts Are Saying:"I picked these up for a young hiker in my family for cold weather layering under snow gear, and they never bunched up or rode down. The soft recycled fabric kept her warm without any itching or fuss."Cold weather days call for a solid base layer, and the Capilene Midweight Baselayer Bottom is what goes on first before the snow gear comes out. Patagonia builds it from soft recycled polyester that wicks moisture and dries fast, so little ones stay warm and comfortable whether they're sledding or just running around outside. The stretchy knit moves with every wiggle, kick, and crawl.