Put up to the harshest of tests by the US Army, Marines and Airforce, these ESS goggles will protect your eyes from dust and combat. To meet military standards they have to pass ANSI requirements for a start - that means incredibly resilient lens strength against small projectiles. With rubber eye seals padded with foam they are comfortable to wear and fit well when worn with current US military helmets. The frame has ventilation holes and a anti-fog coating on the lens to prevent residue building up. On top of these ventilation holes is a thin layer of foam that will filter air yet still block dust from entering. Attached is a fully adjustable elasticated head band that when set up correctly will keep a tight seal on your head. A lens sleeve can be rotated around to protect the goggles when in transit. If you frequent dusty tracks when motorbiking or need some protective eyewear for combat sports then look no further than these ESS goggles! Weight: 24 lbs. Dims: 20x15x15