Check the listing for details. Martingale Dog Collars,Adjustable Soft Nylon Quick Release Buckle,No Pull Tra.... Color: pink, Condition: New. Listed at 10.45 USD. #455 in Slip & Martingale Collars. This nylon snap collar is an perfect balance between durability, functionality, and aesthetic appeal. Closure Type: Buckle. Material: Nylon. Target Species: Dog. This unique design style will make your dog more noticeable when out with you.