The ""ALFRESCO"" blocks, designed for booth indoor and out doors use, are easy to put together in infinite combinations. Comes with an instruction booklet. Easy to clean and disinfect. UV Stabilized to prevent color fading. All modules have no sharp edges for added safety. High shock resistance. Two different uses ( placed directly on the floor or with connecting pieces). Use indoors and outdoors. Uses independently it forms a large curve that children must climb over, or a large seesaw. Dimensions: 15-3/4"" L x 12"" W x 12"" H.