The set is composed of 9 32 x 32 cm foam tiles, modular to adapt to all sizes of knitting and crochet projects. The mats are extra thick at 19 mm thick. The rugs have a squared face in centimeters (1 tile = 1 cm x 1 cm), very practical for precisely arranging books. The other side is rough to adhere well to the work surface. The mats are stored in a gray felt box with a zip closure, carrying handle and storage pocket (ideal for storing T-pins, locking combs). Contains 9 rugs measuring 32 cm x 32 cm. Thickness of the rugs: 1.9 cm. Carpet color: gray with white graduations. Storage box: grey felt with black closure. Overall dimensions of the product: 35 cm x 35 cm x 20 cm in height.