The best muzzle I have ever purchased. This will be my second. I bought one for my other malamute that destroys them. He has been able to get out of it a few times. But we keep tightening the strap. The strap has stretched some. But it is very comfortable compared to others we have bought. I will probably buy the all leather ones for next winter, these get all packed with snow and then they can't breath. Thanks for making such a great muzzle!!