The Flight Deck BASE is designed for indoor putting training with the (included) Flight Deck TOUR impact trainer. Simply drop the TOUR into the cutout cavity and you are ready to train! Your own body weight keeps the deck from shifting on impact. The BASE has a non slip surface on both the top and bottom sides and can be flipped over to work for left handers as well! If used with a roll out style putting mat, we recommend adding a household floor mat under the BASE where you stand to level it to the putting mat height.