RADIANS AV Features:

Six-base curved unilens design for superior optical quality. Wraparound lens with no distracting side shields. Width is a full 155mm for increased protection. Distortion free lens is fog and scratch resistant. 100% polycarbonate lens blocks out over 99% of harmful UVB and UVA rays.	Adjustable temple for maximum comfort.  Each pair of AVs comes with a breakaway neck cord. Super soft Jelli Plugs are made of FDA approved materials. Non-toxic, washable. Replacements available. Slide-on, groove interlock temples lock on for stability, slide off for easy lens replacement. Glasses meet ANSI Z87.1-1989 standard.
Sound Attenuation Data Tested to ANSI S3.19-1974 STANDARD NRR 25 Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 Mean Attenuation dB 42.70 32.50 29.87 34.20 36.03 39.97 43.25 48.03 39.00 Standard Deviation dB 5.04 5.04 4.61 4.54 3.49 4.01 6.55 5.60 4.49