Alvalley Flat Martingale Lead for Dogs Thickness 3/8" x 68" Lenght x 22" Collar Made with the finest leather for a smooth and soft feel to the touch. The ends of the leahs are stitched and glued. The softess leash you will ever find. Thickness 9.5 mm or 3/8 inch - length 173 cms or 68 inch x 56 cms or 22 inch collar.