BINGPET 1 Neck girth is 28-32 inches,chest girth is 27-39 inches,Back Length is 12inches.Some customer replied it is large than store size. Made with sturdy,super-tough nylon material,weatherproof and carefully double-stitched.Reflective accents increase visibility in wild places. Attached saddlebags feature an efficient weight forward design.Detachable Backpack Harness with rubber non-slip Handle on top help lift the dog up and over obstacles 4-Pocket can hold water bottles,poop bags,toys,collapsible dog bowls,first aid.Putting similar weight on both sides will help keep your dog in balance Let your dog feel a sense of purpose and refocus,helps to prevent barking,exercise and activity