ColdPruf Youth Quest Performance Base Layer Pants - This baselayer is rated for cold to very cold weather with high activity levels. It Controls odor and inhibits bacterial growth on fabric as well as wicks and aids in moisture evaporation. The inside is brushed for warmth and comfort. Single Layer Engineering ColdPruf Technical Fiber Polyester with SILVADUR Intelligent Freshness 85% Microfiber Polyester 15% Spandex Fabric Weight: 6.5 oz. Comfort Waistband, Tagless, and flat seams for added comfort Gussets, front and back rise provide superior comfort and fit Style: 62B