Nanotex® Coolest Comfort is an advanced moisture wicking system that helps control and balance body temperature to keep fabrics feeling fresh and dry. Using advanced nanotechnology, each fiber is fundamentally transformed, delivering dry, cool comfort through and through. Coolest Comfort transforms polyester fabric from being a moisture barrier to a moisture conduit, pulling dampness away from the skin. Coolest Comfort treated polyester dries four times faster than 100% cotton. Compatible with most fabrics, it is ideal for bed linens and sheets, comforters and duvets, pillows, mattress protectors, and more.