The Web Reaction Collar is a martingale collar with buckle for easy on/off and reflective Tubelok webbing. The limited-cinch martingale function is popular among dogs who have a knack for backing out of traditional collars. The Web Reaction is packed full of Ruffwear's signature collar features: separate ID tag attachment point, a silicone tag silencer, and strong and comfortable webbing that holds its color. Materials: Buckle - ITW Nexus Airloc side-release buckle, Leash Connection Point - Anodized 6061-T6 aluminum V-ring, Webbing - 100% polyester Tubelok (17% recycled), Other - Silicone tag silencer. Made in Vietnam. Care: Hand wash with mild detergent and air dry. Neck Size: 11-14 in (28-36 cm) - Width: 0.75 in (20 mm), 14-17 in (36-43 cm) - Width: 1 in (25 mm), 17-20 in (43-51 cm) - Width: 1 in (25 mm), 20-23 in (51-58 cm) - Width: 1 in (25 mm), 23-26 in (58-66 cm) - Width: 1 in (25 mm). For escape enthusiasts: A popular solution for dogs who can escape from traditional collars; the martingale keeps your dog securely on the leash so you can enjoy everyday walks and adventures. Stays in place: when the collar is attached to a leash, the collar's strap loop engages the limited-tightening martingale function, preventing dogs from escaping from the collar. Safe and confident: The durable aluminum V-ring provides a secure point attachment for the leash; the separate point attachment for identification ensures that the leash is always attached in the right place. Visible and secure: Tubelok webbing features a built-in reflective system for improved visibility in low-light conditions; it's comfortable, durable and colourfast, meaning colors and patterns will stay vibrant. Less noise: The rapide ring makes it easy to add and remove tags and keep your dog's information up to date. The silicone silencer fits between the tags and reduces noise.