MALLCITY Waterproof Outdoor Backpack Hydration Packs with Bladder Cycling Running Hiking Water Bag Bicycle Packing Organizers Latop Bags for Men & Women LIGHTWEIGHT & GOOD VOLUME: Includes storage compartments that will fit your clothes, iPad, phones 11" -12" laptops and even a DSL camera. For even more storage, the side pockets allows you to pack even more on your hike. There are also a net pocket for helmet. FIT YOU PERFECTLY: Adjustable shoulder/chest straps will fit chest sizes from teenagers up to adults (men and women). SAFETY:Reflective patches makes you travel safer at night. 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. BUILT-IN COMPARTMENT for 2L/68 Oz BLADDER : Pocket carries up to 2 liter/68 Oz bladder. Hydration sleeve is ideal for keeping you hydrated during road biking, traveling, running and hiking.