QuenchPak Best Hydration Pack 2017, Mountain Biking Backpack, Running, Trails, Hiking, Holds 2.0 L Water, Perfect for Men, Women, Kids, Fully Adjustable and Comfortable The best hydration backpack is QuenchPak, this pack is ultralight with a quality 2L or 70oz water bladder! This daypack is also perfect for Mountain biking, skiing, running, for use on a bike or we have many use for a rave to stay hydrated and to store all of your gear and accessories! PERFECT FIT & STORAGE: enhanced padding & mesh for comfort. Fully adjustable 4-way straps, fits chest from 26 to 52 upgraded chest strap has built in suspension system to reduce bounce!! With interior and exterior pockets for your gear and accessories! DURABLE SPORTS HYDRATION PACK: QuenchPak utilizes a padded breathable mesh fabric & lightweight Diamond Nylon to ensure comfort, quality & good looks. The construction is water resistant to keep your stored items dry and safe when mountain biking, hiking, climbing, running, cycling and much more! HIGH QUALITY WATER PAK: The 2L or 70 Oz BPA Free Hydro Pack Bladder offers more water storage, when combined with the large filling screw cap allowing for the addition of ice and the easy-use bite valve you have instant on demand hydration to quench your thirst while you have fun or work on your health & fitness! NO RISK TO YOU- QUENCHPAK GUARANTEE: We stand behind the quality construction, design and ease of use, if for any reason you are less than 100% happy with your equipment we will assist you and refund your purchase, no questions asked.