Simply set it inside your hat and turn the screw. Allows for a size increase of approximately 1.5-2cm, providing an easy and comfortable fit. Fix it at your desired size and leave it for 48 hours. Prevents hat deformation and shrinkage. Prevents wrinkles and deformation during storage, preserving your precious hats. A versatile design that works with many shapes, including caps, hats, and baseball caps. Made of durable wooden material with sturdy metal screws. 【How to Use】 Set this product inside the hat and turn the center screw to your desired size. Leave it fixed in that state for 48 hours, and it will expand by approximately 1.5-2cm. 【Important Notes】 Over-stretching the hat may cause damage. Size adjustments to the hat are at your own risk. ●Important Notes● ✅ These are imported products, so there may be some scratches or stains. We appreciate your understanding before purchasing. ✅ Although new, we inspect each item individually after taking it out of the bag. ✅ We will try to make the shipping as compact as possible, so please be aware of any folding wrinkles. ✅ We are committed to 【Careful Packaging】. We will ship in a宅配ビニール袋 (delivery vinyl bag), envelope, or recycled cardboard box. ✅ Immediate purchase without comments is welcome! Thank you very much!