Description Comfortable and Convenient to wear! Can be wear on any occasion. 100% Brand New, High Quality Material: Polyester Size: 55 cm - 60 cm /21.7inch-23.6inch djustmentable Depth: 10 cm/3.9inch Package Included:1 Cap Note There is 2-3% difference according to manual measurement. Please check the measurement chart carefully before you buy the item.(1 inch = 2.54 cm) Slight color difference should be acceptable due to the light and screen.