'47 Brand Edmonton Oilers Clean Up CapA must have staple for any Oilers fan. The Edmonton Oilers NHL '47 CLEAN UP in black on black is the every day, all day hat to support your team. The '47 Clean Up is a relaxed and curved, dad cap style made in a garment washed cotton that gives you a soft feel. Considered by many to be the best fitting hat in the game, perfect all day and all night, you won't want to take it off.