If dealing with a rain cover for your pack is too much, then this waterproof backpack liner might be just the thing you’re looking for. This large, roll-top dry bag is designed to fit nicely in the main compartment of you backpack to keep everything inside 100% dry, no matter what happens. Should you get caught in all-day torrential downpours or accidentally drop you pack in the stream, everything inside will still be dry. This lightweight liner is made with 30d Cordura and fully taped to keep water out. The roll-top closure adds an extra layer or protection, keeping water out even if fully submerged.