Product Description Material: Nylon M: 35-45CM L: 43-53CM XL: 51-61CM Color: Black, camouflage Suitable For: medium and large dogs Package Contents: 1 * Nylon Adjustable Dog Training Collar 1. SOLID QUALITY AND SOLID COMFORT: Designed with a thick nylon strap with thick soft padded inner lining to ensure your dog wears comfortably and does not cause any irritation. 2. GREAT DETAILS FOR USER FRIENDLY: Velcro allows you to add a unique military patch/name or morale patch to your dog. Emergencyping experience is our first concern. 3. 5 ADJUSTABLE POINTS: Made to last and comfortable, with a durable metal D-ring and metal buckle with 5 adjustable points; Easily adjust the snug fit and attach the dog leash. 4. SIZE OPTIONS: Available in 3 sizes for medium to large dogs with neck length M (35-45cm); L(43-53CM); XL (51-61CM). 5. Durable: Sturdy durable for your dog training,hiking,working,walking,running and hunting etc,Magic sticker on the back of the dog collar,you can attach a tag with his name on it or ID patch badges and other velcro accessories to make it people get to know your dog better.