The Armorsole bottom is completely waterproof and easy to clean. The interior pad can be removed and machine washed. Top and side panels provide plenty of ventilation. The pack comes equipped with room for your laptop or iPad, an interior tether to keep your dog in place and adjustable sternum straps to keep you comfortable - Suitable for dogs up to 25 lbs. - Waterproof, muckproof, Armorsole bottom - Side and top ventilation - Zip down top mesh - Roll top buckles - Adjustable sternum straps - Interior tether to attach your dogs harness