Interchangeable lens system with popular nylon frame design. This eyewear is prescription adaptable. Ektelon eyewear is designed specifically for racquetball and meets or exceeds impact testing of ASTM F803 and all safety requirements cited by USRA Official Rules, Section 2.5. All lenses are anti-fog and anti-scratch treated. Microfiber lens cleaning pouch and headstrap are included with each model.