Cashel Crusader Fly Mask. Offer your horse the ultimate in fly protection and a safe alternative to toxic and ineffective fly sprays. Top-rated for comfort, design, and fit by equine clinicians and publications, the Cashel Crusader Fly Mask employs a three-hole cap design that ensures comfort, eliminates forelock damage and remains stationary whether your horse is in the stall or the pasture. The panels are constructed of soft-coated nylon micromesh that hovers above the skin's surface, protecting the soft tissues of the eyes. Edges and seams are bound with low-nap plush fabric that won't attach to irritating burrs or bristles.