Free size. Fits head circumferences of 50-60cm. Adjustable with the inner adjuster. You can cut it to your preferred hairstyle and style it freely. Made with high-quality heat-resistant fiber and a wide artificial scalp, it has a natural finish in terms of touch, texture, and luster. Heat resistant up to 160°C, so curling irons, flat irons, and hair dryers can be used. Please note that the color and texture may differ slightly from the actual product depending on your computer or mobile environment. Some shedding may occur when you first start using it, but the shedding will naturally decrease. Please note that fibers or threads of other colors may adhere during the manufacturing process. Please understand that the color may appear different from the actual product depending on the settings of your monitor and the lighting in your room.