Ultimate Comfort Sports Mask Black. The mask is made from 3mm lazer cut Neoprene with filtered intake air vents that have 3 layers of fabric, 2 melt blown filter, and one poly spandex cover with a print on. The sports mask consists of 2 exhaust air vents so as to exhaust the CO2. It has a nose clip to ensure glasses do not mist up. The ultimate comfort lazer cut poly spandex back strap ensures a comfortable snug fit.