Pack Body 210D High Density 37% Recycled Nylon with C0 DWR: Designed without PFAS Pack Bottom 420D High Density 40% Recycled Nylon with C0 DWR: Designed without PFAS Lining 40% Post-consumer Recycled 135D Polyester with C0 DWR: Designed without PFAS Pack Hardware Bluesign® Approved Buckles Harness/Hip/Lum Multi-Density Foam