The One Mirror Mask is a new addition to the Arena equipment line up and is an innovative goggle for fitness swimming. Arena swimming goggle primarily designed for professional Swimming players. The goggles are engineered to adapt to most swimmer's face with special gaskets that ensure a watertight fit and comprehensive, crystal-clear vision. best swimming glasses in this price segment. The sleek design includes anti-fog treated polycarbonate lenses and soft silicone seals for comfort that lasts. The mirrored surface on the lenses makes this mask a smart option for outdoor swimming and triathletes, as it reduces glare and provides UV protection.