Portable storage organizer - our 3x5 inch index clip box is a very convenient portable storage option, suitable for your daily use of small items. It is small and easy to carry no matter you go to school, office or anywhere on the earth. Multi-color/4-pack - 4-card storage box. Each color has different vitality and cool colors (red, black, white and blue), so you can choose your favorite color. LIMITLESS application - Our index card box is a powerful product, which is very suitable for families, offices and schools. Organize your business cards, flash cards, recipe cards, small office supplies, stationery&the list is still on Storage limit and durability - when we talk about storage, our card box can hold up to 400 cards. In addition, it is made of thick hard plastic, which makes it very strong and waterproof. Our hinged cover is tightly closed to ensure your goods are safe, reliable and in place. Color: black/red/white/blue Material: plastic Package Contents: 4 x business card holder