Noise reduction: NRR: 21dB Colour:blue+Pink Material:ABS+sponge Size: 16 x 12 x 4.6cm Package Contents: 2 x Ear Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Many high-decibel operating environments will seriously affect the hearing of workers, so a reasonable choice should be made according to the actual site environment. Soundproof earmuffs reduce the possibility of damage to the operator's hearing. Soundproof earmuffs are a product that can significantly reduce noise and protect ears. It is widely used in places with high noise such as factories and airports. Streamlined design, sound-absorbing ear pads are light, soft and comfortable; fully handle high-frequency and low-frequency noise and reduce average noise; widely used in high-noise areas such as factories and construction sites. Noise-proof earmuffs are usually made of absorbent materials or highly elastic ABC materials. After wearing, the earmuffs will isolate the ears to prevent sound from entering the middle ear and inner ear (ear drum), thereby achieving the purpose of noise reduction, so that people can get a quiet rest or working environment. 2PCS Ear : 1 x Blue Ear & 1 x Pink Ear