Years ago I was given a VERY large one of these to use at the beach, this works GREAT for a beach/lake/river towel, dry off BEFORE using your towel so you don't end the day with a super wet towel.  I keep a couple of these on the boat for myself and the kids.  My wife thinks I am retarded so she won't use it.  But hey, It sure beats having to throw towels in the washer/dryer after EVERY single boating trip.