Looking for an eco-friendly top quality product for your dog? We think that earthdog designs and manufactures some of the finest eco-friendly hemp products on the market. Aside from helping protect the planet, hemp is a great choice for collars, leashes, and harnesses, as it is hypoallergenic and softens with use, providing your dog with a much more comfortable option than other materials, such as nylon. earthdog's Demeter Hemp Buckle Martingale Collar features a triple-layer, 100% hemp canvas construction with a beautifully designed, distinctive trim and top quality contoured quick-release hardware. Best of all, it's machine-washable! The company knows that the loop of martingale collars does have a tendency to wear out while the rest of collar is still in good shape, so they are happy to offer a replacement loop in the same pattern or color as the main collar. The company reminds dog owners that dogs wearing martingale collars should be supervised at all times. Features: Eco-friendly hemp martingale dog collar Hemp is hypoallergenic and offers greater comfort Triple-layer, 100% hemp canvas construction Beautifully designed, distinctive trim Top quality contoured quick-release hardware Machine washable Available in three sizes, as follows: Size Length Width Small 8"-14" 1" Medium 14"-20" 1" Large 18"-26" 1"