4 New Radians Competitor Hearing Protection Earmuffs. This is a new set of 4 pairs of 26db NRR Radians Competitor hearing protection earmuffs. The adjustable headbands slide to fit most sizes. The foam filled padded ear cups fit securely and comfortably over the ear. These are very lightweight. When it comes to hearing protection, Radians is unsurpassed in selection, quality, delivery and value.