Water Resistant Back Pack with Built in Life Jacket to keep your pup safe during Adventures. Great for hiking, swimming, kayaking, camping, traveling, and beach days! Lightweight and Comfortable Backpack with Breathable Air Mesh Base Layer. Quick Drying! Size Large Accommodates Medium to Extra Large Dogs. 2 Buckle Release Pouches for Storage, and Additional Seal-able Plastic Bag included for Extra Protection for your Pup's Necessities. 2 Easily Detachable Pouches that Float for Extra Buoyancy. 2 Adjustable Belly Straps and 1 Triangle Chest Strap for Secure Placement. High Visibilty Color Scheme with Reflective Accents on Pouches and Easy Control Handle. Heavy Duty Metal Ring for Leash Attachment. Waterproof Zipper. Multipurpose Backpack designed with your pup's safety in Mind. Backpack measures 22x15x3 inches and weighs less than 1 lb. Can accommodate Chest sizes up to 40 in, Neck sizes up to 34 in, and Belly sizes up to 35 in.