X-LARGE FITS DOGS 100 LBS TO 130 LBS - 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. HARNESS COMPATIBLE - Void of bulky material, our lightweight dog vest can easily be worn under any dog harness you choose with comfort and style.