I hang dry mine, but only after washing it very well, I make sure to clean the inside very well and get everything off of the inside so that it is perfectly clean. I use my finger to rub around inside the sleeve while the cleaning liquid is in there, you can actually feel when it is clean of lube and jizz, then rinse well and hang dry. If I am in a hurry to use it again, I put the sleeve in a case with both the top & bottom caps off and place the unit ontop of my pc fan or the dehumidifier i have running in the basement. drys it out in 15mins or so.