SOFT & BREATHABLE MATERIAL - The dog backpack harness is made of durable nylon oxford and padded with soft cushion to protect your dog's skin. Breathable air mesh keeps your dog cool during outdoor activities. Your dog will enjoy the daily walk in this comfort dog harness. LARGE CAPACITY - A main bag with zipper design on the back, match with cute green frog shape, which is eye-catching and large capacity. The dog self carrier can carry dog food and snacks, collapsible bowls and cups, small water bottles and toys like ball toys,snuffle toys and even your keys. NO PULL & ADJUSTABLE - Dog harness vest design, with fully adjustable system and durable quick-release buckles for easy securing and adjustments design, And the dog harness is both adjustable on the neck and chest part, for comfortable fit. DOUBLE METAL D-RING - The heavy duty vest harness made of high strength 900D Nylon Belt with sturdy stitching for extra durability. Top of the vest have two metal D-rings with reinforcement treatment in each side,that can be attached a dog leash to play with your pet dog for outdoor travelling, camping, hiking, walking, hunting, running climbing and fishing. FOR SMALL MEDIUM DOGS BACKPACK - Three Sizes Cute Cartoon Frog Backpack, more suitable for small and medium dogs to wear. Ideal for everyday walks, outdoor trips, and for helping overweight pups to carry weight and exercise; Also works as a canine emergency kit to hold medicines and other supplies; Measure and refer to our sizing chart to find the best fit before ordering.