Once your roller is clean, never stand it upright to dry. That crushes the fibers and causes flat spots. Instead, lay it on its side on a towel or hang it on a wire. Give it a few hours, or overnight if you’re impatient. You’ll know it’s dry when it feels fluffy again, not like a wet sock. You know that feeling? Ew.
How To Clean A Roller at Erin Bergan blog
For storage, wrap the completely dry roller in plastic wrap or the original packaging. This keeps dust off and prevents the fabric from rotting. Some people toss them in a ziplock bag—genius. Others (like my pre-enlightened self) leave them in a bucket to collect spiders. Don’t be that person.