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! * Soft, permanent custom fit * No mess * All day comfort * Simple, easy to follow instructions * Safe, non toxic and hypo-allergenic silicone * Environmentally friendly * Long lasting and washable * Made in the USA NRR 26 (Noise Reduction Rating)