Black sport-wrap laser safety glasses are an light-weight comfortable sport warp frame with a glass laser filter. It is ideal for use in most laser applications and comfortable for long periods of wear. 335 laser filter was primarily developed for protection from laser wavelengths 190-540 nm and 1000-1100 nm. OD Specifications: OD 6+ @ 190-540 nm OD 5+ @ 1000-1100 nm VLT: 38% Item #151-38-335