Hooey Nomad Walking Dog Harness: Fully adjustable dog walking harness with no-pull strap for comfort and control. Durable Materials: Harness is constructed from heavy duty polyester webbing featuring authentic Hooey prints. Hooey embodies the attitude of new Western generation, appreciative of its history with a focus on the future. Fully Adjustable: Front chest and lower chest strap are fully adjustable for a custom and secure fit. Over the head outfitting. Two Leash Attachment Points: Standup d-ring for main lead attachment for day-to-day walks, and martingale loop on chest for increased control that helps you work against pulling without gagging and choking. Sizing: Small (Chest Girth: 15"- 21") Medium (Chest Girth 20"- 31") Large (Chest Girth 23"- 36") Extra Large (Chest Girth 31"- 44") See sizing chart in images