Coming in 30-litre and 50-litre sizes, these waterproof bags from specialists OverBoard promise 100% protection from rain and should also stand up to sand, dirt and quick total submersions.
The feature-packed backpack includes outer mesh pockets, padded shoulder straps and an air-flow back panel and is big enough for race and training essentials.
The big 50-litre holdall (pictured) has a wide mouth opening to easily chuck all your larger stuff in, external pockets for keys and nutrition, four D-rings and a carabiner clip for multiple attachment options.
Price: £65.99/£89.99 from www.over-board.co.uk.
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