Dogit Nylon Dog Muzzle helps control biting, barking and chewing while permitting drinking and panting. Strong, but soft, nylon construction. Can be either machine or hand-washed. Dogit Nylon Dog Muzzle - Black, XLarge, 21.5cm (8.5"). Strong, washable nylon construction. Suitable for Saint Bernards, Great Danes, Great Pyrenees.