Our high quality Dog harness is made of soft air mesh, double padded vest harness with integrated Reflector to keep your dog safe at night and in the dark, great for walking, running, hiking and all outdoor activities, maintains your dog's natural movements. Soft breathable texture with no hard edges or buckles to irritate skin, tugging and pulling on your pet's neck and makes walking comfortable. Fully adjustable straps at neck and chest allow a custom fit of your dogs. Lightweight Design 360surrounds the integrated pet dog vest harness, evenly divides the pressure, relieves the stress, protects the dog's chest and abdomen, ensures maximum durability Quick release buckle, Metal D-ring for leash attachment Fitting Instructions/Sizes- X-Large: Base of Neck: 15.7 in/Chest Girth: 21-32 in/Weight 28-47lbs. Please choose size based on your dog's chest girth and neck girth by measuring around the widest part of your dog's chest and neck before purchase. If in between size, choose the larger size and be sure to set aside 1 inch Colors: Red, Navy Blue, Yellow, Black, Hot Pink, Water Blue, Lime Green, Purple Sizes: XS, Small, Medium, Large, XL Size Base of Neck Chest Girth Weight XS 7.5" 9-13" 4-6 lbs S 9.8" 12-18" 6-10 lbs M 12.5" 14-29" 10-17 lbs L 14.0" 19-29" 18-27lbs XL 15.7" 21-32" 28-47 lbs