Four good reasons, why you should have a towel with you at all times while travelling the galaxy:

Firstly it always reminds you of the galactic motto: DON’T PANIC!“

In wet condition it is secondly a great weapon for close combat.

Third: In a pinch you can suck vital nutrients from a towel that has been in use for three weeks, thus saving you from starvation.

Four: Three reasons are more than enough.

Five: The HHGG book and this towel tell them on every beach and at every biker bash that you’re a person of galactic format.