I had put these in my cart and then read David's review. Suddenly I panicked, had I purchased kids bonefones? They would be too small! Now that I have a pair I can confirm that David's head is larger than life. Yes these are nor a perfect fit, they are slightly large for my adult head, but they fit comfortably. The sound is good, not perfect, but what I expect for cheap bonefones and I won't be upgrading anytime soon. As for size, they are designed for a large adult head. So don't panic As for performance, 100 percent amazing at the economic entry range.

These headphones are fantastic if your intending on buying them for a child. The sizing is terrible and they are not adjustable and are non returnable as soon as they’re opened. Really annoying there’s no sizing details on the product information regarding size.

The size is good for an adult. Happy with the purchase

I had tried in canal buds, inear buds and now purchased these bone conductor earphones. Best decision ever I

The earphones have worked well but I am having problems with the charging cable. It would help if I could get a replacement cable.