The new shaped Hydrapak from Nathan fits all of their bladder compatible race vests along with most other race packs and rucksacks with a bladder pocket. The 'anti-slosh' shape helps to reduce sloshing. The side seal closure is quick to use and gives full width access to the bladder meaning it's easier to clean and dry. The quick release tube can be cut down if needed and features a high flow bite valve which can be locked off for transport.
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