CamelBaks Classic Hydration Pack is an easy way to carry 2.5 litres of water in comfort. It contains the CRUX hydration bladder, which releases more liquid per sip than before and is refillable without having to remove it from the pack. The Air Mesh back panel allows moisture to escape from the skin and reflective details provide better visibility in the dark. Valuables can be stored in the small zipped pocket.