Abertin&reg; 12l Waterproof Outdoor Backpack Hydration Packs with 2l/68 Oz Bladder Cycling Running Hiking Water Bag Bicycle Packing Organizers Men and Women 1. PERFECT SET - Included 68-Ounce (2 Liter) FDA APPROVED food grade hydration bladder. Hydration sleeve is ideal for keeping you hydrated during road biking, traveling, running and hiking. 2. LIGHTWEIGHT & GOOD VOLUME - Includes 2 storage compartments (16.3* 9.1 inch) that will fit your clothes, keys, purses, phones etc. With a net pocket for helmet. 3. WILL FIT YOU PERFECTLY: Adjustable shoulder/chest straps will fit chest sizes from teenagers up to adults (men and women). Reflective patches makes you travel safer at night. 4. WATER RESISTANT AND DURABLE: The main compartment is covered with high-quality Nylon material which is water resistant so your belongings stay dry in light/medium rain and also It is durable reduces wear and tear so your pack lasts longer. 5. BPA-FREE & FDA APPROVED: Our bladders are made of food-grade premium quality anti-bacteria EVA materials. Thick EVA bladder material is pressure-tolerant and wear-proof. Manufactured with leak proof sealing technology. Keeps you hydrated. Includes a wide screw cap so you can add ice cubes for an even cooler drink.