Safe and easy to use, sensory and tactile. The mats are made of high-tech materials, and are filled with cosmetic liquid (non toxic), completely sealed and have a non slip bottom. The thick protective layer is highly scratch and abrasion resistant, and each mat can withstand up to 90kg. These can be used on a table or on the floor. Move the gel with hands or feet, and create flowing colours that swirl around as you move them.