Coastal Pet Products DCP120620BLK Leather Circle T Oak Tanned Round Dog Collar, 20 by 3/4-Inch, Black Circle T Black Leather Round Dog Collar, 3/4", color: black, adjustable sizing to fit necks 16" to 18". Round collar have a leather core to ensure that they hold their shape and is rounded over lengthwise, expertly sewn together. Circle T oak tanned round dog collar will not mat hair. Made of full grain, top quality leather that has been vegetable tanned. Available in black color; measures 20-inch length by 3/4-inch width