Portable Waterproof Backpack
High Quality Material: Made from lightweight, breathable mesh back panel and high-quality nylon fabric ,that's very lightweigh comfortable and durable.
2L Hydration bladder included: It's simple to drink, pull the rubber mouth piece out and the water comes right out. Push rubber mouth piece back to close, You don't have to bite anything. Our water bladders passed pneumatic pressure test.It is completely pressure-tolerant and leak proof for carefree biking, running, hiking and other outdoor adventures!
Adjustable straps: Adjustable shoulder straps, so you can make the backpack fit you perfectly and keep the pack from moving,Wide webbed shoulder straps help to reduce the burden of your shoulder.
Two layers article design: one for the liquid container, and the other for keys, compass, phones, etc .
Capacity: 2L (1.5L-2L water bag can be installed)
Weight: 340g Water bag: 120g (lightweight bicycle bag)
Material: High-strength nylon, ultra-lightweight