When every gram and every cubic inch counts, switching to a microfiber towel is one of the easiest upgrades you can make to your kit.

By a morning regular who hates soggy cotton Full transparency: I went through three cotton gym towels before this one. They got heavy, smelly, and took forever to dry — usually still damp in my bag by the next morning. This microfiber one changed that. I just drape it around my neck between sets instead of stuffing it somewhere. It's thin enough that I forget it's there, but it soaks up sweat off my face and arms way faster than a cotton towel ever did. After class I give it a shake, it's bas...