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! Made in the USA. 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 Patent # 8,184,838 B2 NRR 26 dB JUST 3 EASY STEPS : Open the containers and separate the colored and white materials into halves, keeping separated. Mix one of the colored halves with one of the white halves. Mix until both halves are one consistent color. Gently press material into one ear by pushing in the center of the silicone. Let it sit in your ear for 10 minutes, then remove the plug. Repeat steps for second earplug.Image may not be representative of color or style.