This Chillmax Pillow from JML is designed to offer a restful night's sleep, or a cooler, more comfortable seat! Its inner gel reacts to your body temperature to absorb excess heat, drawing it away from your skin to produce a natural cooling effect for up to three hours. You can use it as a pillow or a seat cushion to help relieve the discomfort of overheating. Plus, it can also be inserted into your favourite pillow case or cushion or placed on top for maximum cooling. The portable size and wipe-clean design mean you can take it wherever hot, sticky nights or uncomfortable, prolonged sitting might be a problem.