One of the classics. Tastefully bright signature with a roll off at either end of the spectrum, best used with a compatible headband (google 'Parts Express headband', or get them for a slightly expensive $13 on Amazon).
Open back design, but sound leakage is fairly minimal, so they're great for anywhere but buses or planes, I guess.
There's a few famous mods, but this honestly sounds decent out of the box. Still excellent value for money at this price if you're not willing to get cheap (yet nice) earbuds (note: not IEMs) from China via AliE, if IEM fitment is a regular issue for you, or if you struggle with jaw pain from headphones on the regular.
Minimum of $49 for free Prime delivery.
Enjoy!
These are the only style my adult son can use. He hates earbuds and headset on top. These are perfect and this Koss set sounds very good. I bought him three pairs for last Xmas because they're hard to locate at times.