ASCT Hydration Pack - Ultra Lightweight! - Minimalist Backpack and 2L Water Bladder/Bottle. Perfect for Camping, Hiking, Running, Cycling, Fishing, Hunting, Fun/Mud Run. 1 Year Hassle-Free Warranty. MINIMALIST DESIGN: Everything you need, nothing you dont. Our backpacks are ergonomically designed with simplicity in mind. Additional room for wallet, phone and keys. BREATHABLE: Mesh shoulder straps and back channels combine to keep you cool and dry in the heat. REPLACEABLE 2L/72oz BLADDER: Made from BPA Free TPU materials our water bladders wont leech harmful toxins or alter the taste of your drink. DURABLE CONSTRUCTION: Crafted with high quality nylon fabrics so it can keep up with your active lifestyle 1 YEAR HASSLE FREE WARRANTY: No questions asked. If you are unsatisfied with your purchase, for any reason, simply contact ASCT through the buyer-seller messaging feature and we will gladly issue you a full refund.