These prescription swim goggles are available in half steps between -1.5 and -5.0 diopters, for clear-sighted underwater swimming. The goggles offer 100-percent UV protection, and have a smoke gray tinted lenses for added sun comfort. BanZ Prescription goggles are designed to fit ages 3 to adult and come with four changeable bridge pieces to get the fit right. A stylish goggle carrying case is included.