Squids 3387 Dual Band Arm ID/Badge Holder with zipper closure is designed for easy access and prevention of lost IDs and badges. A dual elastic band with hook & loop closures adjust to fit a range of arm sizes or over bulky outwear, while a large interior pocket keeps both IDs/badges and small items secure, such as keys, EZ passes and money. The large 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 4.75in x 2.75in // 12cm x 7cm. It is ideal for those who work in warehouses, distribution centers, material inventory on construction and steel sites, airports and grocery/personal shopping.