About this item 1. Made of high quality aluminium& EVA material, durable and reusable. 3. Protect your card from squeezing and long time exposure which may cause damage. 2. Lightweight and convenient to carry, can put into your pocket. 5. High capacity that can hold 8pcs TF cards and 4pcs SD cards. 4. Thicker than common card box, inner has double layer design, not easy to deformation.