Our side-release buckles are the best we've seen, not only durable and strong but also easy to put on and take off. With our premium nylon webbing and solid brass hardware, which won't ever chip or rust, these collars are ready to stand up to years of wear. Note: Extra-small is not lined with nylon for easier adjustability. Colorful, hand-woven design. Machine washable and hang dry. Durable nylon backing. NOTE: Not all patterns lend themselves well to very narrow widths. Please check individual products for availability. Thanks!