The Sakai Lace's original lace fabric which is knitted with plenty of the functional yarn called "Suzushiya NEO" newly developed by Japanese fiber manufacturer TEIJIN FRONTIER Co., Ltd. The yarn is made by twisting 144 ultrafine thread kneaded with titanium oxide, and bunching them together into 288 fine yarns. Themal Insulated Curtains is made up of more than 80% of this original yarn. By using the yarn, the curtain cuts 71% solar radiation heat and 90.1% of UV rays. It also has a 38.1% heat insulation effect and protects privacy from both indoors and outdoors.