Can drink koozie for gimbal holder

All the cup inserts I have tried for the excellent gimbal drink holder have not been great for keeping my can drinks cool while out in my canoe. This is a quick remix to fit a beer koozie in the gimbal. Two versions 500ml (Euro beer can) and 355ml (Australian beer can) sizes. Note the 355ml can koozie is a snug fit. If needed, drill a small hole in the bottom to make it easier to insert/remove the cans. Update: found out this is a perfect fit for this Decathlon folding chair cup holder: https://www.thingiverse.com/thing:3736678