Cool-jams Moisture Wicking Men's Boxer Pajama Set(M-XXL) (Medium, Steel) Wash in cool or warm water on gentle cycle. Never use fabric softener or fabric softener sheets because it will minimize the wicking properties of the fabric. If you accidentally use fabric softeners, re-wash the garment in clear water to remove softener residue, so the wicking properties will return to maximum effectiveness. Lay your garment flat or hang to dry. Tumble drying won&#039;t damage the garment, but can sometimes create static.