Made of sustainable fabric 30% Pre-consumer recycled cotton, 39% Linen, 17% Polyester, 12% Cotton and 2% Other fibers. Lining in 100% organic cotton. Polyurethane foam insole with natural adhesive + antibacterial natural cork that provides lightness, breathability, absorption, flexibility, respectful of the environment. Elastic 70% rubber and 30% polyester. With the sole of Natural Rubber and Band of natural jute. 100% natural cork label. All our products come from local consumption, contributing to the reduction of CO2.