Material: Polypropylene Features: -Protect and store your hat while traveling, make sure your hat won't be crushed. - The best hat washing aid that maintains the hat's inner shape while the outer protective cage locks to protect your baseball cap during cleaning. - It can be used as your hat rack, hat shaper, hat collector, hat hook and hat organizer, allowing you to clean your entire hat collection. Washing Machine Cap Scrubber: Suitable for both adult and kids hats, the upgraded cap scrubber size is perfect for cleaning both adult and kids hats. Its tuff shell protects the beak and keeps the brim in its original shape. This hat frame will keep your hats safe and secure while traveling or storing. These cap washers are suitable for washing machine or dishwasher. Dishwasher washing is recommended for best results. It will prolong the service life of the cap washer. Our sturdy baseball cap gasket cages really help bring new life to your misshapen and crooked hats. Its sturdy design is perfect for washing, drying and storing your hats. Traveling is made easy with the Washing Hat Cage.