Allows excess energy to be expelled while sitting at a desk, or in any chair helping achieve greater focus | Quietly enables movements while working as the relaxing deep pressure fosters the ability to stay on task and be more productive | Provide a calming influence as the textured surface facilitates just the right amount of tactile stimulation | One size fits all - 34cm x 35cm x 6cm when inflated | Customise firmness to contour exactly to each individual's needs | Also great to be used without shoes for calming sensory feedback | Made from PVC and is Phthalate and BPA free