Business Card Caddy - 4"x3" Translucent Purple with Aluminum Cover. BUSINESS CARD : Solid, secure business card storage box for on-the-go business people. PLASTIC BOX : Sturdy plastic box keeps cards crisp and clean. ALUMINUM COVER : Aluminum cover adds strength and beauty. USE : Can also be used to store medicine, money, keys, etc. SIZE : Measures 4"W x 3"D x 3/4"H.