Polyurethane Frame. Undidirectional Air Flow System. Moisture Wicking Micro-Fleece Lined Face Foam. Quad Foam. Flexible Single Lexan Lens Anti-Fog Treated (AFT) 100% UV Protection. Lens Mounted posts for Tear Offs. Holds Up to 28 Laminated Tear Offs. Silicone Beaded Strap. Medium Fit