BlueFire Kids Ear Protection Safety Earmuffs, 27dB Hearing Protection Ear Muffs, Foldable Noise Reduction Earmuffs Kids Protective Earmuffs Ear Defenders for Sleeping, Studying, Shooting

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BlueFire Comfortable Kids Hearing Protection EarmuffsUses: SNR(Signal-to-noise Ratio): 27dB NRR(Noise Reduction Rating): 21dB Reduce noise and protect children's hearing Flexibly adjusted to suit various head sizes 360°Rotatable & Foldable Ear CupsInstructions for use: 1.Pull the ear cups outward and place them on the ears, so that the ear pads completely cover the ears and are tightly attached to the head; 2. Adjust the height of the ear cups on both sides while keeping the headband down until you feel comfortable; 3. Adjust the headband to fit tightly on the head.