Equilibrium Muzzle Protector Grey/Yellow Keep your equine friends protected against the sun with the Equilibrium Muzzle Protector. Featuring a simple visor type mask, the Muzzle Protector fits onto any field safe headcollar to help protect your horses sensitive muzzles against sunburn â€\\\" perfect for light coloured horses and pink noses. The Muzzle Protector helps to block up to 70% of harmful UV rays and has been designed with soft padding around the noseband to prevent rubbing.