Kiorafoto KHD-SD4 Slim Credit Card Size Durable Lightweight Portable SD Memory Card Case Storage Holder Protector for 4 SD Cards PROTECTIVE - Prevents memory cards from dust and loss HIGH CAPACITY - Several individual slots to store memory cards PORTABLE - Credit card size, lightweight and portable MARKABLE - With memory card patterns on the back for ease of use and can be marked EASY PORTABILITY - A keychain hole is designed for easy carrying