Luxury Tencel Fabric: What we are always trying hard to do is creating cozy spaces for our customers. That’s why we choose Tencel as the cover for this twin mattress topper. Tencel is a luxury fabric that is often used on high-end products. It gives soft, breathable and cooling touch, makes every sleep a extravagant indulgence Gel Infused Swirl Mattress Topper: Gel mattress topper twin includes actual cooling gel beads to dissipate heat away faster and regulate your body temperature. Certified Mattress Topper: LINSY LIVING bed topper twin size not only has the CertiPUR-US certificate( measures for smell, material, performance and durability), but also got the rigorous STANDARD 100 by OEKO-TEX Certification. It means that every part of our top grade tencel textile is harmless for human body, a bed topper you can definitely trust.