SIZING - X-Large Vest Fits Dogs 100 lbs - 130 lbs; Top of Shoulders/Base of Neck Measuring a Diameter 27" - 34"; Chest Measuring a Diameter 35" - 42" BRIGHT AND VISIBLE, DAY OR NIGHT - The SafetyPUP URBAN reflective dog vest is engineered to provide superior visibility around the clock, minimizing the risk of automotive accidents TOUGH ENOUGH TO USE EVERY DAY - Our vest is built from premium quality rip-resistant 300D Oxford Weave fabric with double stitched straps for maximum durability and weather protection UTILITY STRAP INCLUDED - For added convenience we've added a utility strap to the side of the vest. Hang a poop bag or carabineer to hold lightweight accessories.