Cancer awareness lanyards come in two colors: pink ribbons or purple ribbons. The pink ribbon is most commonly used to represent breast cancer, while purple ribbon is most commonly used to represent Alzheimer's and animal abuse prevention. When you buy these awareness ribbon lanyards online, you can show your support for the cause in a convenient way. They have swivel hook attachments, which can be used to hold keys, identification badge holders and more. They measure 3/8" wide and 36" long and have a silver crimp to keep the swivel hook in place.