Comfortable padded goggle with a dielectric coated glass laser filter. 320 laser filter was primarily developed for protection from laser wavelengths 1000-1100 nm offering high visibility when using Nd:YAG lasers (1000-1100 nm). Optical Density (OD) Specifications: OD 5+ @ 1000-1100 nm Visible Light Transmission (VLT): 78%