MP Michael Phelps Xceed Titanium Mirror Swimming Goggles (One Size) (White/Black) Mixed, , Patented curved lens for expanded field of vision allows the swimmer to see walls and the competition without altering head position. Titanium Mirror coating to maximize light perception together with sun light protection. Engineered with Exo-Core technology, which combines two materials for maximum performance. Compressed Micro-Gasket provides a leak resistant seal and a low profile design. Semi-rigid exoskeleton maximizes the structural strength and stability of the goggle.