The Polaris Aquanought Bum Bag is completely weatherproof. Designed to survive the harshest conditions, but light enough to be used all year round, the Aquanought Bum Bag is the perfect lightweight carrier.With a fully waterproof main compartment, along with additional storage for a soft flask and gels, you’ll find our Bum Bag surprisingly spacious. A removable tool organiser allows you to keep your spares, tools and loose change as organised (or disorganised) as you want!Key Features:Fully waterproof zips,Tough Nylon material,Adjustable waist strap,The Polaris Aquanought Bum Bag is an MTB essential,.