OutdoorsmanLab Hydration Pack Bike Backpack with 50 Oz/1.5L BPA-Free Bladder for Running, Ski, Hiking, Bike. Great Lightweight Day Pack Bag Fits Men Women Kids with Chest Size 27" to 50" STAY HYDRATED WITH FOOD GRADE 50 Oz/1.5L WATER BLADDER: Never worry about dehydration with our FDA approved, food grade 50 Oz / 1.5L BPA-Free leak-proof bladder. The wide screw cap so you can add ice cubes for an even cooler drink. Enough to get you through a day of hiking, cycling, running or biking WILL FIT YOU PERFECTLY: Adjustable shoulder/chest and extra long padded waist straps make sure it doesn't bounce when you run, hike, or ride bikes. The chest straps fit chest sizes from teenagers/kids with 27" up to adults (men and women) with 50" chest size. STAY DRY AND ABSORB SHOCK: Extra thick padding on the back, should and waist straps ensures there is no bounce when you move. Breathable mesh throughout the pack ensures you stay dry even on a hot day. Our own diamond Rip Stop Nylon material ensures water and sweat resistant so your belongings stay dry. PERFECTLY SIZED POCKETS: Includes storage compartments with a carabiner to hold you keys and a small pocket to protect your iPhone 6s/6s+. The main pocket will fit your clothes, phone, 12" ultrabook. Front zipper pocket allows you to pack even more on your hike. 100% MONEY BACK GUARANTEED: when you order today, you're protected by our 90 day, no-questions asked, money back guarantee and world class customer service. Get Yours TODAY!