100 accuri gogglesthese ergonomically designed accuri goggles from 100 provide maximum comfort with an extra wide elastic covered 45cm silicon strap for a perfect fit on your helmet the frame is made of urethane which is flexible and resistant to any test featuresclear lenscurvature suited for comfort and great field of visionmoisture managing triple layer foamnine pin lens retention systemoversized 45mm silicone coated strap holds your goggles motionlessconstructed out of flexible yet dur