Normally with this kid in particular 2 months in, & we would be replacing the earphones either by now, or very soon - he is a cord killer! I’ve had them for about 1 1/2 weeks and I began finding grey fuzz all over my floors. acoustic guitars). Be advised that bone conduction earphones cannot compete in sound quality with other standard sets, the sound is a bit diminished and muted, but still clear and has a nice distinct sound with good separation. We love Keens, but hate the price- especially when your toddler outgrows shoes every other month! The crocs so far have been very solid. Try it, youll love them! She likes. my son is 11 . Plenty heavy-duty for home use.