Biosynex Multi cushion With microsphere gel Hot or cold action Medical device Dimensions 10x15 cm Multi thermal pillow with Gel microspheres 10 x 15 cm to relieve daily pain. The cold relieves stiffness, the heat relieves pain. The touch of velvet on one side offers greater comfort and eliminates the risk of burns. The gel with microspheres distributes the surface evenly and resists up to 150 kg of pressure.