1: These things are a miracle of packaging. Its amazing what they compress into such a small package.
2: Extremely portable. As an avid day hiker and occasional overnight back packer, these little babies have everything you look for in a backpacking towel.
3: Fairly absorbent for their sizes. I wouldn't use the smaller towel (I got the .3oz 12"x12") for a beach blanket but I would use it for about everything a standard hand towel would be used for.
4: Disposable. Unlike the hand towel I usually carry, these towels can be used and abused and then disposed of after a trip - or dry them out and use it as a fire starter during the trip.
In short these little towels do what the advertise and at a price worth the trip. These 12"x12" are only just over $2.50 for a package of two towels. I wouldn't expect you to start hanging them in your bathroom or kitchen but on the trail or on a camping trip, these are killer. I think that I might try out there larger beach towels on the next camping trip to the beach. Check these guys out next time you plan to hit the trail.