CASHEL Crusader Fly MASK - Mule Donkey Long Nose with Ears Mule Long Nose with Ears. Note all mule and donkey sizes have 13" ears. Rated #1 for comfort and fit. 70% UV protection. Soft, durable, breatheable mesh cap for extra comfort. Patented forelock hole keeps hair out of your horse's eyes Strategically placed double darts keep mesh away from temples and eyes