The nylon strap of our Best Fit Adjustable Mesh Dog Muzzle easily adjusts to fit your dog perfectly. High-quality mesh webbing provides ventilation, while the open front allows for easy panting and breathing. Available in nose circumference sizes 1 (3″), 2 (4″), 3 (5″), 4 (6″), 5 (7″), 6 (8″), 7 (9-1/2″), 7XL (10-1/2″), 8 (11-1/2″) and 8XL (13-1/2″). This mesh muzzle provides a safe, comfortable solution whenever temporary muzzling is necessary.