fdmt protective earmuffs are used to protect hearing and reduce noise distractions in a noisy environment. They attenuate loud and harmful noise, without excluding other ambient sounds. The sound level is considerably reduced to promote sustained attention and concentration. The stretchable headband and the pivoting, cushioned ear cups allow a head adjustment for both children and adults. Comfortable, robust and foldable, they fit into the included pouch for hygienic storage and convenient transport. Sound reduction of 27dB. Easy to clean (removable foam). 1 year warranty.