Rec Specs Helmet Spex XLRec Specs Helmet Spex XL Goggles Helmet Compatible Protection for All Ages Maintain peak vision performance under helmets in Helmet Spex XL. Features venting grooves in eye rim for increased air flow. Helmet Spex XL include a skull cap that must be worn over the goggle and under the helmet to keep the goggle in place. Sizes: Large XL [A: 58 B: 39. 7 ED: 60. 6 DBL: 18] Lens Package: All of our frames include a clear single vision Rx with fog protection