Pros Don't fall out
Great bass for a small earphone
Good detail level
The clip works well for me so far
Good level of noise isolation
They look good
Feels pretty durable
They're sweat- and water-resistant.
Cons The "sporty" look might not be for everyone
Summary All in all, these headphones delivers on nearly every possible front. They have the looks. They're pretty cheap for a pair of good-sounding in-ear headphones. They don't fall out of the ear, thanks to the earfins, and they are quite comfy too. Their build-quality is really good. They're sweat and water-proof. And of course, the sound quality is actually really good, with thumping bass and a great detail level. I don't know what else to require from a pair of relatively cheap headphones, but they sure as hell fulfills my needs.
Pros Color, light weight.
Cons Smallest ear buds are too large; during exercise fall out REPEATEDLY
Clip is USELESS; won't stay on at all ; cord flaps all over the place with its weighted lower extension
Sound isn't much better than standard issue ipod earpieces
Summary Purchase something else. These are marketed as a an Addidas brand made by Sennheiser. I had a set of noise canceling Sennheiser phones for years which I loved (as the anti-Bose), which finally fell apart so I tried these due to lightweight; completely regret the purchase to the point I'll probably discard them.
>>>>> Purchaesed another set of these (CX680) and a set of MX680 for Christmas gifts after purchasing mine; I retuned both of them to Best Buy due to dissatisfaction with mine after uisng a few times.