Buddy Belts Special Collection Pet Harness, Grape, Size 4 Its the harness that hugs your dog. The original step-in, easy to use single buckle harness combines fashion, function, safety and durability Floating O-Ring lets the leash move with your dog while that harness stays in place and allows sizing adjustability Double layer, stitched leather increases durability and product life, reinforces the natural strength properties of leather Welded metal hardware adds to the durability and premium construction of every BB harness Girth measurement is a snug fit around the chest, just behind the front legs. If measurement bridges sizes, use smaller harness for a full grown dog