Carolina Gym Supply Above Ground Resi MatsCarolina Gym Supply Above Ground Resi Mats are an integral product for any gymnastics program. They are especially useful for training dismounts off of the balance beam! Foam Carolina Gym Supply Above Ground Resi Mats are constructed with a solid layer of 12" soft polyurethane foam over a lattice construction of foam logs of differing high densities. This construction gives the athletes a "cushy" landing without a fear of bottoming out the mat. Mesh