This Mask comes with a EVA lining that provides insulation to the brow and sensitive nose area of the horse giving 100% UV protection to those areas particularly for horses susceptible to Uveitis (Red/Pink Eye). The elevated EVA lining allows good air circulation under the fly mask. The Equivizor™ Fly Mask is the most suitable soultion for the constant issue of the insect irritation to your beloved horse. It is truly unique sitting up off the horses face, preventing folding onto the eye and ensuring greater comfort. It is washable, durable and lightweight. It acts as a barrier against the heat of the sun while promoting a suitable level of airflow around the eye region. This soft EVA lining prevents laceration of the cornea, insulates the forehead and shades the eyes. Three strategically located darts create a cantilever to lift the EVA liner and the outer mesh. These highly ventilated, protective shields are the finest Fly Masks available.