These handmade crochet bucket hats are 70s inspired and made with 100% cotton yarn. Cotton is machine washable, however with any cotton some shrinkage may occur in hot water or dryer. To prevent this either handwash/machine wash in cold water and lay flat to dry. The cotton blend is light and breathable so these hats are wonderful in the spring and summer! PLEASE NOTE: Colors may differ slightly in different lighting, however I have made listing photos as true to life as possible. Pattern is by knottinghook crochet on YouTube.