Calvin Klein Neck Strap Card Case Features RFID Blocking Function. Personal Information Protection: This function prevents information from RFID chips embedded in credit cards, passports, etc., from being read by unauthorized scanners (skimming devices). Security Measures: By using a special RFID blocking material for the lining, it provides security measures to protect consumers' personal information and credit card information from digital theft. Colors: Black, Silver Size: Approximately 8.5 cm (height) Approximately 10 cm (width) Approximately 2 cm (depth) Specifications: 4 card slots 1 pocket Accessories: Box included Neck strap Removable Condition: Used a few times, but there are no noticeable scratches or stains, and it is a relatively clean item. There are wrinkles on the inner tag. Please check the photos for detailed condition. ★Purchase Source/Quality Guarantee★ Purchased from antique markets and brand auctions that require an antique dealer's license. Authenticity is verified by appraisers. Please purchase with confidence. ★Notes★ ◎ Sizes may vary slightly due to amateur measurements. ◎ Please refrain from purchasing if you are concerned about minor details, as this is a used item and has been stored at home. ◎ We inspect and try to describe any noticeable scratches or stains. Occasionally, we may overlook small scratches or stains. Please understand and purchase at the used price. ◎ The colors in the photos may differ from the actual item depending on the shooting environment and viewing environment. Please inquire before purchasing if you are concerned. ★ Shipping method (Yu-Yu / Rakuraku) may change depending on the situation. Items with small sizes will be shipped using Yu-Packet Post or mini. ★ Please be sure to check the profile before purchasing!!