【All sales are final. There is no returns or exchange. Please be sure about your purchase before placing your order. 】 ★Mumba Baby Ear Protection Noise Cancelling Headphones for Babies and Toddlers Baby Earmuffs - Ages 3-24+ Months ★Maintenance and Clean -Only earmuff surface can be cleaned. Clean with neutral soap and warm water please. Do not submerge in water ★Product Parameters: Material: ABS, anti-sound sponges Net Weight: 103g(3.63 oz) Noise Reduction Rating (NRR):31dB Single Number Rating (SNR): 26 dB Main features: noise reduction Package Dimensions:‎6.42" x 6.3" x 2.95" Item Weight: 3.63 ounces