Fabric : 73,5% cotton / 26,5% Sorona *The Sorona® fiber was developed by the Dupont company in 2000. It is an innovative synthetic fiber which aims to replace elastane. Sorona® is a very soft, resistant and insulating material. But unlike elastane, Sorona® has a very short drying time, it does not wrinkle or pill. In addition, Sorona® is UV resistant: the colors last much longer, which extends the "healthy" life of the fabrics.