Contrary to what one would expect, the heel positioned is not a visco foam product, but a product filled with a hollow siliconized polyester fibre. The fibre has fire-retardant characteristics. Velcro ensures a fitting closure.
The cushion is made from cut visco foam having a density of 50 kilograms, and measuring 43 x 43 x 7 cm.
At the bottom, there is an anti-skid coating. Ideal as a relax cushion at every moment of the day.