Meets ASTM F803 impact standards for racquetball, tennis, squash, field hockey, women"s lacrosse and soccer. Independently PECC Certified. Unique 6 base design gives the illusion of an 8 base wrap around sports goggle. Strong, lightweight nylon construction for maximum impact resistance. Limited lifetime warranty. Kids Sizes: X-Small: 52/15 (fits kids 4 to 7) and Small: 54/15 (fits kids 8-12). NOTE: This is a NO lens option for prescription lens insertion only. Glasses cannot be worn without lenses.