Specification: Material:Polyester Color: Pink, Green ,Orange Size: M: Chest: 23.6″- 29.5″ L: Chest: 27.6″ – 35.8″ XL:Chest: 31.5″ – 43.3″ Weight: M: 9.6 oz L: 10.6 oz XL:11.5 oz Features: Material: high quality Soft Polyester,it is extremely comfortable for dog. Pack includes interior mesh pockets. Vintage Style design make your dog fashion,Multi-functional backpack for traveling or everyday use. High density material provide a better holding for your beloved pet and do not hurt fur. Two main zipper side pockets on each side with pouch. BENEFITS: – Calms down hyper dogs,Cheers up depressed dogs and gives confidence to anxious dogs – Better workouts for your dog in less time, shorter walks – Can have treats available at all times for on-the-go training – Flips your dog’s mindset to “working mode,” makes them obedient and pull less on the leash – Keep all your hiking essentials for your dog in this backpack, simply put it on, and you’re ready to go at a moment’s notice – Big enough to put a GPS tracker in the bag, if you give your dog free range during a hike and they ever gets lost, find them in no time! NOTE: – If you want to get a suitable backpack for your dog,please take for reference on above measurements correspond to chest size. – Waterproof design.But If it rains,it will get wet. – Be careful, the sharp items like branches ,to prevent scratching. – Don’t put something overweight in the pack, otherwise your pets will uncomfortable.