The drying time for Cool-jams Sleepwear depends on several factors: room temperature, room humidity and the amount of moisture left in the fabric after washing. If you are hand washing, we recommend hand wringing first and then wringing inside a twisted towel for a faster drying time. Depending on all of the above factors, dry time can be 5 minutes (tumble dry) to 4 hours (hanging). Sorry that we cannot be more specific, but we can tell you that based on side-by-side testing, Cool-jams is the fastest drying microfiber sleepwear currently available in the marketplace. This quick drying feature is one of the many reasons so many customers purchase our sleepwear for travel and temperature regulation. It is not a problem to put Cool-jams in the dryer as long as you do not use fabric softener or softener sheets which diminish the fabric's wicking ability. Also some customers in dry climates notice a bit of static when Cool-jams are placed in the dryer.  The dry time in an automatic dryer is 5 minutes or less.