Puro Sound Labs PuroCalm kids earmuffs are tailored to protect children from suffering loud and harmful noise, ensuring 27 dB NRR (Noise Reduction Rating) for effective kids hearing protection. Especially designed and sized for children aged from 3 to 16 years old. We are trying something new with our Red PuroCalm, in an attempt to become more Eco-Friendly we cut out the box and they will arrive to you in just the bag.