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.