Measuring 79 by 38 by 18cm, its capacity is 45 litres and it weighs 476g (not that this really matters as it will be sitting in your boot at the time). Made of 210 denier TPU impregnated waterproof and UV resistant nylon, it features:
Roll-top closure at the top for a watertight seal.Two roll-top fastening points to accommodate large or small loads.
Exterior mesh compartment with bonded zipper opening at bottom separates/dries wet gear.
Reinforced bottom panel.
Welded seams and components.
Adjustable/removable carry straps also function as backpack straps.
Lightweight material and compressible design.
The air valve serves two purposes - compressing the bag and also allowing wet kit some room to breathe without letting it drench your boot. The carry straps offer an additional carrying option to normal dry bags, and are good enough to carry heavy kit a short distance - say, to the washing machine from your car - but little more. They'll cut through your shoulders like excalibur after more distance than that. In short, it's a well thought out and useful dry bag to store your wet kit until you get home without ruining your car. I like it. Sometimes, it pays to think outside the box (or have someone else do it for you).