• Waterproof and air-permeable Evac fabric base allows air to be pushed out but water can't get in
• Waterproof, roll-top closure secured with our patented Field Repair Buckle for a reliable seal
• Compress soft contents to their smallest possible size while adding minimal weight to your pack
• Ultra-lightweight, bluesign APPROVED Ultra-Sil 30D nylon main body fabric with a non-PFAS DWR finish
• Waterproof seams you can trust—double-stitched and tape-sealed