A compact towel that can get you dry in no time, this is something at can be used during numerous activities. To list a few: sports, camping, cycling, trekking, city trips.
There are microfibretowels in smallandlargesizes, and they fold up incredibly small. These travel towels absorb much more water than you think and barely take up any space in your luggage or (sports) bag. Extra tip: stock up with variouscolours so you know which one is yours.