A perfect choice for cold weather activities, these pants feature waterproof System3 Technology, warm insulation, and much more! Focus on the beautiful world around you whether hiking, skiing, or on a scenic nature walk in these perfectly insulated and comfortable pants. Shell: 100% nylon. Lining back upper body and knees: 100% polyester. Lining front upper body and lower leg: 100% nylon. Insulation: 100% polyester. Waterproof, breathable shell with System3 Technology and fully taped seams. ThermoliteAR Insulation for intense warmth. Integrated gaiters with mesh venting. Relaxed, athletic fit. . .