The only downside is the cables that seem a bit thin to be resistant in the long term, but for that price, I have nothing better, so I guess you need to know to make choices. Too, but I think it is independent of the product, my left ear has a form more suited to my right ear earphones. So if you have the opportunity to try before you buy them, do it to see if the headphones fit in your ears well.
The soundproofing is almost nonexistent, either with quality foams or foams suggested by amazon (which are quite satisfactory overall.) But it manages to hear his favorite music while walking on the sidewalk an avenue (what I do almost daily).
Well, I hope that my contribution will have you informed (s) for your purchase, if so, please let us know by calling this comment useful.
Enjoy shopping!