TUSA M32 features TUSA's patented Hyperdry (Purge Mask) System which allows for easy, no-nonsense clearing of the mask with a single exhalation. Additionally, the Imprex 3D Hyperdry incorporates side windows for enhanced panoramic and peripheral vision and TUSA's patented round-edge skirt for greater comfort and fit. 3-window design with enhanced panoramic view and peripheral vision. Hyperdry System for ease of mask clearing. Round-edge skirt for maximum comfort and fit. Low volume design for snug fit and easy clearing.