Material of lanyards: Polyester/Nylon, Metal Material of card covers: Matt finish and durable with ABS material, with fixed transparent window, all round corners, leaktight sliding design, all makes it safe and comfortable in use. Size of lanyards: length=17.7 inch approximately. Size of card covers: can put ID card, bank/ credit card,etc. Great gift for your families, your friends, your kids, anime/cartoon/movies lovers, a office staff, doctor, nurse, dentist, teacher, IT person, officer, journalist, businessman or anyone who needs to show ID regularly. Pictures: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Thank you and happy purchase! Note:Please select the products you want according to the option number and pictures! Please select the desired style according to the corresponding number of the picture, we will ship it according to the option number , wish you enjoy your good shopping.