FABRIC COMPOSITION: Rib fabrics( 95% cotton 5% spandex ),cooldry and breathable,can freely breathe when wearing it. SCREEN-PRINTING TECHNOLOGY: Skeleton pattern is through the screen printing technology, It is the use of environmentally friendly non-toxic odorless white rubber solution printing. YOU NEED TO PAY ATTENTION: When you stretch the mask or wear a mask, skeleton pattern will crack,But do not worry, it is normal for the screen printing pattern. crack skeleton pattern looks more realistic, if you mind this, Please carefully consider the purchase. WASHING NOTE: Can not machine wash, need hand wash; Because the mask is cotton, cotton is the original white. Dyed black through post-production, So washing will fade, but the skeleton pattern is not fade. Please note that this is my true description. Made of rib fabrics, soft and comfort to wear. Great for Halloween, Costume and Party.