This is a pass case made with cartonnage. It's lightweight. It comes with a matching reel key, so you can attach it to your bag for safety and peace of mind. In addition to cards for buses and trains, you can also store your everyday shopping loyalty cards and discount coupons. Also, I think it's safe and convenient to secure your insurance card and medical examination card to your bag with the reel. Size: Width 7.2 x Height 10.3 x Thickness 0.4 cm Weight: 20g Reel weight: 15g The reel extends up to 40cm. ⚠️ Please be careful not to get the cartonnage product wet. Each item is carefully made, but please refrain from purchasing if you are looking for a perfect product. Please understand that this is a handmade item before purchasing. We will disinfect the product before shipping.