Squids 3388 Wrist ID/Badge Holder is designed for easy access and prevention of lost IDs and badges. A soft and breathable circular knit polyester material stretches to fit a range of wrist sizes, while a small pocket with zipper closure keeps small items secure. The clear window is made with durable vinyl for protection and long-lasting use. This arm band holder fits most ID badges or access cards measuring 3.75in x 2.75in // 9.5cm x 6cm. Available in 4 colors (black, orange, lime and blue) to match various uniforms. It is ideal for those who work in warehouses, distribution centers, material inventory on construction and steel sites, airline baggage scanning and grocery/personal shopping.