RADIANS CUSTOM MOLDED EARPLUGS. IT IS A DO IT YOURSELF KIT, THAT MOLDS IN 10 MINUTES. THEY ARE SOFT, PERMANENT AND CUSTOM FIT. THERE ARE SIMPLE, EASY TO FOLLOW INSTRUCTIONS. THEY ARE SAFE, NON TOXIC AND HYPO-ALLERGENIC. THEY HAVE A NOISE REDUCTION RATING OF 26 DECIBELS.