The Speedcraft SL is designed with a shorter lens profile and more compact nose bridge to fit smaller faces. With the exception of the lens air scoops, the SL model maintains the same high performance features and lens technology as the Speedcraft. - Ultra HD lenses manufactured from high-impact resistant and lightweight polycarbonate - 5.5-base cylindrical shield lens for increased peripheral view and protection - 360 visibility for unobstructed views and optimal field of vision - Interchangeable scratch resistant lenses provide 100% UV protection (UV400) - Hydrophobic and Oleophobic lens treatment repels water, dirt and oil - Temple arm scoops to manage moisture - Designed in California - Includes: hard case, microfiber cleaning bag, nose pad and clear replacement lens