Perfect dry compression storage to keep gear reliably dry and compact inside a backpack or bike bag. Made from bluesign-approved ultra lightweight Ultra-Sil 30D Cordura® nylon with a C0 non-PFC DWR, and an eVac® fabric air permeable base with a C0 non-PFC DWR finish that allows you to push air out while still keeping your contents dry inside. This means no need for a purge valve, making the Evac Compression Dry Bag UL light and simple. Compression straps make it easy to evenly compress soft items, and the hypalon non-wicking roll-top closure also keeps the water out. Simple, extremely light and reliable- the perfect dry compression solution for internal use. Features 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 PFC-free DWR finish Waterproof seams you can trust- double-stitched and tape-sealed Fast and easy access through compression strap side-release buckles Eliminate bulging and achieve even compression using the four ultralight straps with two ladderlock and two easy-access side-release buckles Generously sized straps allow max-capacity filling with reinforced stitching on all stress points for added strength Not intended for paddle/watersports or bikepacking (mounted externally) use Features: - Waterproof and air-permeable Evac fabric base allows air to be pushed out but water can't get in - 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 - Achieve even compression and eliminate bulging with ultralight compression straps - the 3L, 5L and 8L include two ladderlock straps and one side-release buckle strap while the 13L and 20L include two ladderlock straps and two side-release buckle straps for maximum compression control on larger loads.