The Compound Side Chair from Mater is an FSC-Certified seating set by OEO Studio that combines rustic modern design with eco-friendly materials. Each chair is crafted with a commitment to sustainability, featuring a blend of recycled materials that may vary slightly. The seat and backrest are made from coffee shell waste sourced from BKI’s coffee roasting process or wood waste mixed with post-consumer e-waste. The chairs stack up to 8, and each frame is made from 20% recycled steel.