This Memory Card Holder case is made of high quality ABS material, sturdy and durable. It can hold 2 SD cards, 4 MSD / TF cards and 1 USB 3.0 card reader (custom fit molded card reader slot). The holder can effectively protect cards from loss and your scattered cards can be held neatly. The snap?joints inside the card slots secure your cards and protect them from falling. The holder is easy to use and can be marked for the memory card patterns on the back. You can insert the card into the slot correctly and quickly according to those patterns when using. The patterns also can be marked with information about the corresponding cards for bettering organizing your cards. Besides that, the holder features 2 in 1 design of the memory card holder and USB 3.0 high speed card reader. The USB 3.0 card reader comes with 3 ports: USB 3.0, Micro USB 2.0 and Type-C USB 3.0. Plug and play design, no drivers required. It can access to SD and MSD / TF cards simultaneously. This credit card size holder is lightweight and portable. You can put it easily into your pocket, handbag or backpack. This memory card holder with integrated design of memory card slots and card reader slot will become a good partner for your card organizing and data transferring.