I bought these for my 3.5 year-old daughter, so she could enjoy using an iPad without driving the public insane.Although fit was obviously important, what's especially important to look out for is volume-limited / high impedance speakers to prevent hearing damage in developing ears. These headphones keep the volume low by design, though you still need to check and make sure that they're at a reasonable level for young children.Sony lists this product as being appropriate for children 8 and older, but keep in mind that there's a cord that can easily wrap around a small child's neck, as well as the previously mentioned volume concerns. The cord is thoughtfully designed as a single line, rather than one that splits to each speaker. With proper supervision, these could certainly be used by smaller kids.The sound quality is... well... the term "you get what you pay for" comes to mind. My guess is that the average kid isn't clamoring for audiophile-quality sound. However, the sound is pretty clean for the price.And the construction? Again, these aren't anything approaching "indestructible". They're cheap headphones that will fit a little head, and won't do much at full volume. The upside is that when they're inevitably broken, they're cheap to replace. The earpieces are very airy, which I consider to be a huge plus, so that kids aren't isolated from their surroundings.When my daughter snaps them in two, I'll almost certainly replace them with the same model.