Comfortable Custom Seal Pre-formed nose-bridge minimises the risk of leaks and is fitted with an moulded aluminium nose-piece for additional sealing. Inner foam bridge provides superior comfort. Secure Custom Fit Soft textile elastic two-strap design with dual point attachment provides a comfortable and secure fit, eliminating the tight and tacky feel experienced with traditional rubber straps. Anti Heat & Moisture Large exhalation valve provides increased air flow making breathing cooler and more comfortable. Also helps to reduce eye-wear fogging and moisture build-up in the mask. Effortless Breathing Advanced three-layer technology provides greater cup strength and minimal breathing resistance.