Masterpet Muzzles are a great alternative to wire muzzles. Made from soft nylon, they are adjustable and are comparatively more comfortable for your dog to wear. Not only do they appear less confronting, they also work wonders in training your pet. What makes Masterpet Soft Muzzles different is that they still allow some jaw movement for your dog. While it restricts them from biting, chewing and barking, it allows them to pant and drink so they don't become too anxious when they need to wear the restraint. While flexible, the muzzle isn't versatile enough for your dog to break out of, so you're the only one who can put it on and take it off. Never leave your muzzled dog unattended. If your dog starts to show signs of distress, remove the muzzle immediately. Do not use a muzzle for punishment, only consider a muzzle when your dog requires restraint. This extra small (XS) size muzzle is suitable for toy breeds and smaller dogs like Chihuahuas, Yorkies and Toy Poodles.