The M89 Ground is barefoot shoe designed to mimic the natural way of walking, encouraging healthier posture, stronger feet, and a deeper connection with the ground. With a refined design and responsible materials, it helps you reconnect with the world around you, step by step. These zero-drop sneakers feature interchangeable insoles and an ultra-thin sole that keep you as close to the ground as possible, making every step feel natural and free. A sleeker feel, even for a barefoot shoe. Crafted with 100% recycled polyester made from used plastic bottles. Lining made from soft bamboo and recycled PET sourced from post-consumer plastic waste. Includes interchangeable insoles:• 5mm insole for added comfort and a smoother transition into barefoot footwear• 3mm insole for a more direct, closer-to-ground barefoot feel For every pair sold, we fund the growth of seaweed in Canadian waters. Ethically crafted in Portugal. Our packaging is 100% recycled and recyclable. Please note that due to the non-chemical dye used in the bamboo lining, slight color transfer may occur during the first wears.