This is what you want
Professional Ear Muffs carries a Noise Reduction Rating (NRR) of 22 gives a very good protection.
Self-adjusting and free rotating ear cups for a perfect fit giving a good seal against noise.
Protect the eardrum from noise interference and enhance worker comfort,concentration,improve learning and work efficiency.
Suitable for use at home,dormitory,self-study classroom,travel,factory,constriction site,F1 games etc.
Size: 25x25x8 cm
Weight: 180 gram
Package Includes: 1 x Earmuffs
♦ QUALITY AND COMFORTABLE. Anti shock ear cups design, made by Non-metallic Material,lightweight and durable, Seismic Performance Perfect. Great for sports events, concerts, festivals, fireworks, and special needs children.
♦ ADJUSTABLE HEADBAND. Humanized design of Headband and flexible use suitable for everyone and more complicated environment.
♦ SUPER SOFT EAR CUSHION. Internal Adopt Unique Latex Foam,External use leather edge,Flexible,Comfortable to wear and Strong adhesion.
♦ ROTARY EARMUFFS. The free-flowing interface allows the ear cups to have a ROTATING feature that can be adjusted according to the person’s face.
♦ HIGH QUALITY NOISE REDUCTION SPONGE. Efficient sound-absorbing cotton has a dense gap, the sound through gaps will be layers of weakened to achieve noise reduction.