The NIMBUS MIRAI shoe is taking steps towards creating a truly zero waste running shoe.A soft engineered knit upper comfortably wraps your foot while supplying advanced ventilation. We've created a new glue that allows this feature to be separated from the midsole after applying heat. Part of our take-back program, this construction allows you to bring the upper and sole back so the shoes can be repurposed.It's also made with 100% recycled content and one type of polyester to support a sound earth.FF BLAST PLUS ECO cushioning is engineered with 24% bio-based content. It's designed to help create lightweight and energetic cushioning properties.