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【100% Leakage Proof Promise】Comes with a built-in 2L bladder, 24 hour swing test and vibration test,OlarHike Hydration Backpack is completely pressure-tolerant and leak proof for hiking, biking, running, camping and other outdoor adventures.
【Multiple Storage Option】Olarhike hydration backpack has multiple pockets that give you all the space you need to store your various necessities.There is a earphone hole, so you can enjoy your music time when you’re carrying a backpack.
【Lightweight & Durable】Made from lightweight, breathable mesh back panel and high-quality nylon fabric, it’s lightweight, comfortable and durable.
【Longer Cooling Time】OlarHike Hydration Backpack keeps your fluids cool with an inside thermal insulation that lasts up to a duration of 4 hours. Your Drink Could Still be Cool After Lots of Activities.