Lightweight body molds to the face for a firm seal and comfortable protection. Wraparound design provides exceptional peripheral vision. Slips easily over most prescription spectacles and adapts to respirators and hard hats without impeding fit or protection. Indirect venting protects eye area against hazardous splashes and airborne particles while allowing ample air circulation for comfort.Large frame fits most faces. Clear polycarbonate lens is treated with uvextreme* AF coating to protect against fogging, scratching, static, dust, and 99% of ultraviolet rays up to 385nm. Goggles come with neoprene headstrap and meet ANSI Z87.1-1989 and CSA Z94.3-1992 standards