Quick Details Style: Bone-conduction Waterproof Standard: IPX 0 Dimensions: 7x7.5x2.5 inches Frequency Response: 20Hz-20KKHz Headfoams Seven Fun Colors Kids will love the gift you give them! Designed with children's and teenagers' safety in mind. As parents, we need to protect our children from harm. Headfoams limit the sound level of 85 dB to what experts & doctors consider safe. You'll never worry about your kids listening to music too loud. Kids may accidentally twist, pull, drop and fight over their head. And you may need to get a new one for your kid to replace the broken ones. Get a Headfoams, you can save yourself all the trouble! Headfoams can be twisted and bent in the opposite direction, and they can still survive! Headfoams are made from the same non-m as in synthetic wine cork and shoes. The material makes Headfoams soft, flexible, shatterproof and lightweight.