A smart, no-fuss solution for compressing bulkier gear while keeping it dryideal for sleeping bags or spare layers on fast-and-light trips.Sea to Summit says: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 eVent 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.Our VerdictThe Sea to Summit Evac Ultralight Compression Dry Bag strikes a nice balance: effective waterproofing, proper compression, and low weight without unnecessary features, reducing volume significantly without awkward bulging thanks to the four-strap design. The eVent base works as promised, letting air escape during compression without a purge valve. The 30D fabric feels decently robust for an internal dry bag, even when fully stuffed.Efficient, well-thought-out, and built for real-world trail usethis ones earned a spot in my standard kit.- Reviewed by Ultralight Outdoor GearFeaturesWaterproof and air-permeable eVent fabric base allows air to be pushed out but water can’t get inWaterproof, roll-top closure secured with our patented Field Repair Buckle for a reliable sealCompress soft contents to their smallest possible size while adding minimal weight to your packUltra-lightweight, bluesign APPROVED Ultra-Sil 30D Nylon main body fabric with a PFC-free DWR finishWaterproof seams you can trust- double-stitched and tape-sealedFast and easy access through compression strap side-release bucklesEliminate bulging and achieve even compression using the four ultralight straps with two ladderlock and two easy-access side-release bucklesGenerously sized straps allow max-capacity filling with reinforced stitching on all stress points for added strengthNot intended for paddle/watersports or bikepacking (mounted externally) useSpecifications3 Litre -3 Litre Weighs: 55g3 Litre Dimensions: 13.2 x 13.2 x 26.7 cm5 Litre -5 Litre Weighs: 63g5 Litre Dimensions: 15.2 x 15.2 x 31.5 cm8 Litre -8 Litre Weighs: 72g8 Litre Dimensions: 17.9 x 17.9 x 37.7 cm13 Litre -13 Litre Weighs: 89g13 Litre Dimensions: 21 x 21 x 43.2 cm20 Litre -20 Litre Weighs: 103g20 Litre Dimensions: 24.2 x 24.2 x 47.6 cmMaterial & ConstructionEvent Waterproof FabricNon-PFAS30D Ultra SilClosure: Non-wicking hypalon roll-top closure with compression strapsHelp & advice:About Sea to Summit

A smart, no-fuss solution for compressing bulkier gear while keeping it dryideal for sleeping bags or spare layers on fast-and-light trips.Sea to Summit says:Perfect dry compression storage to keep gear re