ProCase Ear Defenders Children 3-16 Years, SNR 27dB Noise Cancelling M, Blue\nProduct Details\n--Constructed by solid ABS shell and thickened sound-absorbing foam, the kids ear defenders achieve SNR 27 dB noise-isolation, ANSI S3.19 (US) and CE EN352-1(EU) both certified, which can reduce sensory overload, perfect for kids with autism or sensory issues\n--The adjustable headband features ergonomics telescopic arms that can stretch up to 32 mm/ 1.3 inch on each side, which makes it possible to cover various head sizes for different ages of kids. No worries about kids\u2019 fast growing\n--Kindly Note: For more efficient sound isolation, the earmuffs are a little tight before using. If you feel tight for your kids, we recommend putting it on a box or other objects for 1-2 days to stretch the headband and get it looser\n--Crafted with skin-friendly materials, the well-padded headband offers maximum comfort and snug fit with less pressure. The 360\u00B0 rotatable cups and ultra-soft ear s