The GelTech Memory 5000 uses the most advanced technology in mattress comfort. Manufactured by infusing a special layer called LayGel to the base layer, it creates a sleeping surface which offers a latex-gel feel to provide sensational levels of comfort and rebound. The mattress acclimates to cooler environments for softer, fresher, supported, blissful sleep. By using Laygel, it provides a far better sleeping experience as it will feel cooler, softer and fresher. Additional benefits also include being great for allergy and asthma suffers and offers a reliable long-lasting performance compared to normal memory foam products. The mattress is 20cm in thickness and arrives vacuum packed and rolled for easy transportation. Please allow 72 hours once unrolled for mattress to fully expand.