Packing a wet towel into your backpack every while on the move gives bacteria a helping hand that it doesn’t need. With having a microfibre towel you will be more hygienic and less smelly too.
This one is a lightweight and absorbent, given how thin it is. Although it feels odd at first to dry off with "flat" fabric, it does its job. It gets completely dry within an hour or two, so it won't be drying on your dorm bed all day.