These beautiful game mats are designed of top quality material; they are constructed with a bright cloth surface and dense black open cell sponge rubber base with a non-skid bottom that grips the surface with a soft smooth surface to help with the longevity of gaming sleeves and cards. Each game mat measures approximately 14 X 24 . The 1/16 thin mats are lighter and thinner to allow for a greater flexibility for transportation and storage. These game mats have become a standard throughout the industry.