A hole reducer insert will be included with every putting green. This is a donut shaped hole cut-out that can be placed inside any hole on your putting mat to reduce the hole size from 4.25” in diameter to 2.5” in diameter. The hole reduction insert can be placed either in the hole with the cup, or insert into the hole without the cup. If the insert is loose, pull lightly on the outside diameter slightly to make it more snug.