The PlugsSafety PSGLS02BF-PP polycarbonate bifocal 2.0 hard coated safety glasses with PermaPlug earplugs are protective eyewear with +2.0 magnifying diopter bifocal lenses, integrated retractable molded earplugs, and untinted polycarbonate lenses with anti-scratch coating and ultraviolet (UV) protection. Bifocal protective eyewear provides safety and help with reading and viewing fine details. The earplugs have a noise reduction rating of 25 dB and are attached with 4.5" tethers that can retract into the temples for convenient access to hearing protection. The replaceable earplugs are molded thermoplastic elastomer, a biocompatible, rubberlike plastic, and have a stiff core for greater comfort and ease of insertion and removal than foam earplugs that expand within the ear canal. Untinted lenses can be used indoors and outdoors and don"t interfere with color recognition. This protective eyewear"s polycarbonate lenses resist impact and have an anti-scratch coating to prolong lens life. They protect the wearer"s eyes from 99.9% of ultraviolet rays. The semi-rimless lens design with slim temples reduces weight on the face and fogging on the lenses. The eyewear has a soft, adjustable nose piece for comfortable, secure fit. The frame and temples are made of injection molded ABS (acrylonitrile butadiene styrene) for impact resistance. This eyewear meets the American National Standards Institute/ International Safety Equipment Association (ANSI/ISEA) Z87.1-2010 personal eye protection standards for quality assurance. Ear Plug SpecificationsHearing Protection Rating SystemLocaleValueNoise reduction rating (NRR)United States25Single number rating (SNR)European Union29Sound level conversion (SLC80)Australia/New Zealand18 (Class 3) Protective eyewear, such as safety glasses or goggles, is worn to shield eyes from hazards, including flying particles, heat, chemicals, and harmful exposure to light. Face shields and helmets may be also be used with protective eyewear, especially when welding or working with molten materials, to provide additional protection. Eyewear is sometimes designed to wrap around the side of the head to extend protection to the periphery; the extent of this protection is measured as "base lens curve." Base lens curve has a typical range of 6 to 12, with a 6 being on the flat end of the scale and a 12 providing the maximum amount of wrap around the head. Protective eyewear is commonly used in the manufacturing and construction industries, among others. PlugsSafety manufactures occupational safety products such as safety glasses, earplugs, and accessories. The company, founded in 2003, is headquartered in Stockton, CA.