Comfortable foam padding on the inside of glasses and rubber ear grips guarantee a comfortable tight fit. BIRDZ a leader in US motorsport eyewear has a reputation for providing durable attractive and affordable eye protection. Very few manufacturers can match the quality protection or price. The inside of the frame is padded for maximum comfort even after long periods of use. The strap is made with silicone for non slip use on helmets. Frame is top bottom and side vented to help prevent fogging. Lenses are shatterproof polycarbonate Anti-fog coated UV400 rated. This set also ships with a free Micro-fiber protective pouch! These glasses are temple to temple 140mm. If you feel your face is small/narrow try eyewear within 125-129mm; Medium try 130-134mm; Large try 135-139; and Wide try 140-145mm.