[Operation Guide] After unfolding, ball has a fan-shaped structure, and the blades can be quickly assembled into an arched bracket by inserting them into the positioning holes. After installation, it can be easily placed in the hat, providing an efficient solution for hat shape maintenance [Shaping Maintenance] Professional hat saver design can effectively repair and maintain the three-dimensional shape of the crown, keeping the top of the hat full and straight. During the cleaning process, hat reshaper can prevent the crown from wrinkling, significantly extend the hat life cycle, and provide all-round protection [Material Characteristics] for baseball caps high-performance plastic material is applied, which is both and tough. The adopts anti-collision cap lining technology, which is waterproof and easy to clean, especially suitable for cleaning the sweat-absorbing lining of baseball caps. The elastic structure design hat insert to keep shape ensures that repeated bending not deform and is [Product Specifications] Each hat shaper insert set contains 10 baseball cap shapers (5 in black and white), which can be applied by individuals or shared with family and friends. The size of the single product is 294mmx157mm (11.6x6.18 inches), bump cap insert with an adjustable card slot design, which is perfectly suitable for all types of hats [Applicability] The universal cap holder design is suitable for a variety of hat types: from sports baseball caps to fashionable cowboy hats, from classic top hats to professional work hats. hat holder can not only help shrink the deformed hat circumference, but also can be applied as a daily hat holder to flexibly adjust the hat shape