For our regular-line 100% cotton scrub hats, we recommend machine washing in cold water and hang-drying, since some cotton fabrics might shrink a bit with heat. But most of our customers just toss them in the laundry with no special care, and are very happy with the results. Iron as needed. Performance Solids are designed with heavy institutional use in mind, and require no special care. They’ll stay looking and feeling great no matter how they’re laundered. In fact, our own multi-wash testing showed them coming out of the laundry looking and feeling even better than when they went in! Satin scrub hats should be machine washed in cold water and tumble dried on low.