ezGear's ezSkinTankini is a silicone "skin" case for your iPod shuffle. For the price some vendors charge for a single case, you get two Tankinis -- one white and the other either blue, pink, green, or black.
The Tankini consists of a piece that covers the body of your iPod shuffle and another to cover its USB cap. A thin membrane covers your shuffle's rear Off/On/Shuffle switch. Overall, the Tankini is fairly thin, adding little bulk and allowing for the use of headphones with large miniplugs.
The ezSkin Tankini actually very similar to PodGear's Jumpsuit Shuffle, which I previously reviewed. In fact, I wouldn't be surprised if both were made by the same manufacturer. As such, my summary is essentially the same: These cases have no significant flaws and I like their thin profiles. The only possible concern is the membrane over the back switch, which can be irritating to your skin if used often.