Burton AK 2L Stratus Pants Gore-Tex Membrane, Lining: 100% Polyester, Shell: 100% Poly Imported [ak] Fit with Engineered Articulation WATERPROOFING: bluesign Approved GORE-TEX Fabric [2-Layer] WARMTH: Shell Mapped with Taffeta, Brushed Tricot, and Mesh Lining Fully Taped Seams with GORE-SEAM Tape Lifetime Warranty