Boblbee Amphib 15 Snowboard / Ski / Hiking Backpack Body - Laminated vacuum expanded foam. Trim - Hypron canvas. Shoulder straps - Compression molded neoprene. Buckles - Pa 6 Nylon. Lid is locked on the sides to allow for easy access even when skis or snowboard is mounted. Google pocket is placed inside lid for easy access and protection. Daisy chain webbing on lid for attaching rope bundle. Ice axe loops in superstrong Hypron canvas.