I'm not much of a case person. I was never very clumsy with my gadgets and didn't think the added bulk was a worthy trade-off for the added protection, especially in the day and age of ultra-durable plastics and Gorilla Glass screens. But on both fronts, that's changing; it's a lot harder to guarantee the safety of my gadgets when I've got kids (we're both likely to drop things) and there are some very sleek cases on the market. Enter the $20 Spigen Ultra Thin Air case for the One X.
The Ultra Thin Air is, as one would surmise, very thin and very light.