The Iomega Zip 100MB Disk Set of 4 is a collection of recordable Zip disks specifically formatted for use with Mac computers. Each disk has a capacity of 100 MB and comes in its original jewel case packaging. These disks are ideal for storing and transferring data on older computer systems that do not have built-in Zip drive capabilities. With the Iomega brand known for reliability and quality, this set of Zip disks is a practical and nostalgic storage solution for those looking to preserve or transfer data from vintage computers.