Material: Please look at the picture or chat: titanium steel For reference only no practical criteria Size: See size size selection area on the right side of the size selection area to show size chart Due to different measurement methods, error allowed for 3-5 cm, not quality issues within the range of errors Because of the different lighting reasons and monitors, may be different from the color, please refer to in kind A brief introduction to the sale welcome to this sale place we are committed to providing you with cheap and expensive clothing and accessories, remember to watch us checked before this sale place is sent, but occasionally there is carelessness, receiving clothes sent wrong and sent less quality problems, let's let us know for you first, this is very responsible all five stars are well received Warm tips: To avoid overweight, purchase of multiple items notice separate orders, otherwise, the package cannot be delivered in excess volume Autumn/winter commodity size, be careful to separate the order, please consult the butterfly ring"