The Granite Gear eVent Sil Drysack is ultralight and surprisingly protective for paddling in splashy situations. Even when a pool of water splashes into your boat, this sack's waterproof eVent bottom prevents water from seeping through, and it's breathable for easy compressing when you're rolling the top closure. The rest of the sack is sil nylon cordura that beads drops of water off the fabric to keep your gear dry.