Patagonia Kids’ Capilene® 3 Midweight Bottoms. Our most versatile baselayer for kids dries fast and stays warm. Sled-bound careening is serious business, especially when it comes to staying warm and dry lap after lap. The fast-wicking, versatile Kids’ Capilene® 3 Midweight Bottoms baselayer is made of a quick-drying Polartec® Power Dry® 100% polyester (heathers: 52% recycled, solids: 69% recycled) double-knit fabric, with Polygiene® permanent odor control. Non-chafing flat seams and a brushed interior provide soft next-to-skin insulation. A roomy gusseted crotch, hidden elasticized waistband and self-fabric cuffs for a comfortable finish.