Scupper plugs are an essential item for any kayaker wanting to enjoy their sit-on-top kayak all year round. These plugs allow for more comfortable cold weather paddling and ensure a drier ride for any paddler. They are designed to fit snugly into the scupper holes of your kayak, preventing water from coming up through the deck. This kit provides everything you need to plug the scupper holes on your sit-on-top kayak.