http://www.aquapac.net/
REVIEW: Aquapac Waterproof Backpack Overboard Boater: "I’ve got a thing for dry bags. Finding one in backpack form has been a challenge. The typical PVC material just doesn’t feel as pliable as it should, especially when stuffing it with things. The Aquapac Waterproof Backpack is made of TPU coated nylon fabric. TPU stands for Thermoplastic Polyurethane, which gives the pack its waterproofing"
