Coastal Pet Products Circle T Oak Tanned Leather Dog Leash, 3/8" x 6', Black Circle T oak tanned leash is expertly made for long lasting durability Made of full grain, top quality leather that has been vegetable tanned The tanning process uses tree bark to form a tanning liquor producing excellent leather character The hides are then aniline dyed for luxurious color Available in black color; measures 3/8-inch width by 6-feet length