Neck 12"-16", Width 5/8", Size Small; The collar does not stretch itself. Martingale collar is a slip collar **WITHOUT THE BUCKLE**, which is designed for sighthouds but becomes popular with other breeds. Please take the measurements at the head and neck showing in the size chart. Especially for non-sight hounds, PLEASE CHOOSE A COLLAR SIZE THAT IS LARGE ENOUGH TO SLIP OVER THE HEAD Warning: martingale collar is not for tie out. NEVER leave your dog unattended with a collar on. This product is NOT recommended/designed to use without leash and NOT for indoor use The martingale collars provide more control over the dogs without the choking effect of a slip collar. Great for preventing escape. Properly fitted, the collar will be comfortably loose whenever the dog is not pulling against the leash Polyester fabric with high density webbing to add durability; This collar is a single product. Its matching leash (B01LWN6HZR) /harness (B01M2UN9D8) /lanyard (B075KBDWV5) sold separately All pictures are taken with our production samples from a size of Medium (Width 3/4", Neck 14.5-20"); Please measure your pets carefully to make a safe and fit purchase. Always look at the size chart for the recommended weight range to confirm the size. The 3M Reflective Multi-colored Stripe collection was a big hit among Blueberry Pet's customers since 2016, and now we decide to go beyond the regular collar, leash, seat belt and harness! We are expanding our product line by offering another dog safety solution – martingale dog collars to keep your four-legged friends safe. They are the best dog collar for dogs that slip out of regular buckle collars, and will keep your dog safer on leash. It is also a great training collar preferred by most dog trainers. This martingale collar is fully adjustable.

Blueberry Pet's new martingale collar is perfect for everyday wear. Elegant and simple, just like the 3M Reflective Multi-colored Stripe collar, this martingale collar comes with combined practicality and reliability: comfy polyester materials and durable hardware.

The collar is suitable for most kinds of breed. Small breeds like poodles, yorkshire terriers, corgis, shih Tzu, spaniels, pugs, chihuahuas, maltese, russell terriers etc.; medium breeds like french bulldogs, bulldogs, beagles, dachshunds, collies, bull terriers, Australian shepherds, boxers etc.; large breeds like labrador, labrador retrievers, german shepherd, golden retrievers, rottweilers, huskies, great danes etc.