Perfect for cold weather and preventing "Roll-aways" As Elevation Disc Golf's first putter, the Koi is made to float to the basket with ease. This straight to under-stable putter will hold every line you put it on, and our floppy rubber material will ensure it stops on a dime and melts into the chains. The PDGA approved Koi gives you the confidence needed to run even the most difficult putts and dangerous approaches.