All QUICK MUZZLESare designed for short-term, temporary use. The snug-fitting muzzle restricts an pet's ability to pant, which could inhibit the pet's natural cooling system if worn for an extended time. Use under direct supervision only. Never leave your pet unattended. The Original Quick Muzzle for CATSis an effective temporary restraint designed to reduce the risk of cat bites. The secure, comfortable fit of the Quick Muzzle for Cats provides a less stressful setting for both pet and owner. All muzzles are made of durable, washable, lightweight nylon cloth. SMALL- Under 6 lbs MEDIUM - 6-11 lbs LARGE- Over 11 lbs Directions: Working from behind the cat's head, hold side tabs, slip muzzle over face, pull tabs behind head. Adjust to fit. To Release, pull tabs apart and remove.