Yes, the materials and fabrics used in RYU products are sustainably sourced. We deal mainly with BLUESIGN® certified fabrics, so that we are supporting the most sustainable fabrics on the planet. The BLUESIGN system is the solution for a sustainable textile production. It eliminates harmful substances right from the beginning of the manufacturing process and sets and controls standards for an environmentally friendly and safe production. This not only ensures that RYU products meet very stringent consumer safety requirements worldwide, but also provides you with the confidence that RYU is a sustainable product.