Instant sports towel — with its case

A damp cooling towel in a gym bag soaks everything else. That is why people stop taking it. Instant microfibre supplied with a waterproof case: it travels home damp without wetting the bag. Long format, sits around the neck without sliding off. Worth knowing: never leave it in the case for more than a day. Shut in damp, it takes on a smell that washing does not remove.