Cocoons sunglasses can be worn over prescription eyewear or as conventional sunglasses. The patented frame with built in side shields protect your eyes from all angles, blocking sunlight, UV, glare, wind, rain and airborne debris. Features optically correct polarized Polaré lenses and Flex2Fit temples for a customized fit. Includes neoprene case and microfiber cleaning cloth. The Stream Line (small) frame is designed to fit over smaller oval and round prescription eyewear shapes, to fit over frames not exceeding 4 7/8 x 1 3/8 inches.