Knit cap with brim, uses core brit and thermo catch thread developed by Mitsubishi Chemical. Material prevents static electricity and converts light energy into heat, giving you a sense of warmth. Melange color has a facial expression (black is a solid color). Thread is not too thick, so it is mature and elegant even in casual style. Small patch on the side is made of cowhide leather with a core to keep its beautiful shape. Made in Japan. Developed into the depth of the fibers. Light absorption and heat-conductive acrylic composite fiber with special particles. Quickly converts light energy from sunlight and incandescent lights to heat up the inner temperature of the garment. The particulates in the core allow electricity to escape so it is difficult to generate static electricity. Size: One size fits all; Stretchable Material: S 21.7 - L 22.8 inches (55 cm); Brim: Approx. 2.5 cm); Material: Body: 90% inches (5 cm); Material: Body: 90% inches (5 cm); Material: Acrylic, 10% inches (10% cm). Season: Fall/Winter Washing: Hand-washable, wet Country of Origin: Japan [Caution] The color of the actual product may differ depending on your monitor settings. The stock is shared with multiple stores, so you can easily check the size of your hat at home when you want to buy a hat online shop and do not know your hat size, you can easily measure the size at home using a tape measure around the head horizontally from the forehead and measure around 0.6 inches (1.5 cm) above the circumference of your head. When measured Please note the measurement +0.5cm is your size.