Portable headphones come in two main styles: in-ear and on-ear. The former comprises the ultratiny earbuds and canalbuds that you place at least somewhat inside your ears, while the latter often features a headband and circular earpads that rest over the ears.
iPod accessory maker iFrogz offers several models in both varieties, but the on-ear Ear Pollution Toxix headphones are the subject here. Thankfully, the $20 set doesn't totally live up to its name, but neither does it sound particularly good. The earphones offer a hint of style and a lightweight design, so they could work in a pinch for those on a budget, but the Toxix are far from the best portable option out there.