Radians Custom Molded Earplugs are an easy, do-it-yourself kit, molds in 10 minutes. Dozens of everyday uses including shooting sports, sporting events, construction, lawn care, assembly lines, farming, auto races, swimming, flying, factories and much more!Molds in 10 minutes.Soft, permanent custom fit.No mess.All day comfort.Simple, easy to follow instructions.Safe, non toxic and hypo-allergenic silicone.Environmentally friendly hearing protection.Long lasting and washable.Made in the USA.NRR 26 dB