The Dual Density Fitness Gym Mat - MAT-46 is made of two layers: a High Density Foam Layer and a Rubber Layer totaling 0.75 inches thick The high density foam layer provides comfort during your workout, protects your floor, and dampens sound The rubber layer of the Dual Density Fitness Gym Mat ensures longevity of the foam layer and makes the mat easier to clean Dual Density Fitness Gym Mat - MAT-46 covers 24 square feet of flooring and is fit for any garage gym / home gym MAT-46 has interlocking edges; simply add more tiles to cover the floor as needed