Keys.

This is a pretty neat device. The key holder is very lightweight and slim. The parts are very small but it's not difficult to assemble. It did take me some time, but the instructions provided were very detailed and clear. This works to keep your keys organized and eliminate bulkiness. The compact size also sits well in your front pockets to keep your keys from jabbing and poking out. Also, no more noisy keys jingling, especially when you walk into a quiet office/room. Unfortunately, this isn't for me since I only carry around 3 keys (not enough to fill up the holder). This makes a great gift though. And would work well for those who carry more than just a few keys.

✮ Product Features: 
-Compact size is smaller than a pack of gum 
-Universal, will fit almost any key found at your local hardware 
-Ultra strong and can withstand anything your life throws at it. 
-Eliminates any key jingle 
-Hides the jagged teeth while exposing the smooth back of the keys for easy access 
-Color: Black 
-Gross Weight: 0.3 ounces 
-Material: Lightweight Aircraft Aluminum