This iteration of our newest court style features a felt wool upper for a clean, sophisticated look. The timeless material and silhouette celebrate the future of Allbirds. FEATURES: Slip in, lace up, or slide them on and enjoy the comfy support From materials to transport, we're working to reduce our carbon footprint to near zero. Holding ourselves accountable and striving for climate goals isn't a 30-year goal-it's now We replace petroleum-based synthetics with natural alternatives wherever we can. Like using wool, tree fiber, and sugarcane 100% sweetfoam, a green EVA