There are times when you need a marker such as a plastic bottle, a plastic umbrella, or a mug from a café. That's when Module Design's "Marker" comes in handy. If you attach it to your bag on a daily basis and carry it around, you can use it in an emergency at cafes and convenience stores. The length is adjustable, so it's easy to adjust it according to what you want to wear. The convenient and fun three-color set "Marker" is recommended as a gift for friends.