1、[Hard Material]‑The storage card box is made of environmentally friendly ABS material on the outside and thermoplastic rubber on the inside. The material is hard and can be sealed, waterproof and dustproof. 2、[For 4 CF Cards and 8 Storage Cards]‑Large storage capacity, 4 CF cards or 8 storage cards can be placed for carrying and storing memory cards, which is convenient for your storage and management. 3、[Ergonomic Locking System]‑Ergonomic locking system allows you to easily open the card box. Convenient to carry, with perforated design, can be used with keychains, etc. 4、[Fit The Card Perfectly]‑Each slot is strictly customized to perfectly fit the memory card, firmly fix the card inside, prevent the card from moving around and avoid harmful impacts. 5、[Full Protection]‑The memory card storage box ensures cards are safely locked away from the weather, water, damp, dust and anything else, giving the cards full protection.