This collar is made with 100% cotton fabric and interlining to provide strength, durability, and shape. Each collar is a unique cut of fabric, so patterns and placement can vary. Martingale collars are ideal for greyhounds and other sighthounds who require slip collars. This collar is offered in three widths: 1”, 1.5”, and 2". Prices vary for each. Our collars come in three sizes: Small: 10-14 inches Medium: 13-18 inches (fits most greyhounds) Large: 17-22 inches Make sure you measure the widest part of your dog’s head to ensure it will fit.