Our TBL® Turbo Trainer is built in premium Better Leather, sourced from a tannery with a silver rating for its environmental processes. This style includes our GreenStride™ sole for eco-conscious comfort: the sole is made of 75% renewable bio-based materials, like sugar cane and rubber. Designed for a range of activities, the chukka also features a breathable OrthoLite® footbed to help ensure comfort. GreenStride™ comfort sole made of 75% renewable materials, including sugar cane and responsibly sourced natural rubber Upper in premium nubuck Better Leather from a sustainable tannery rated silver by the Leather Working Group for its water, energy, and waste management Upper detailing and lining in ReBOTL™ fabric, containing at least 50% recycled plastic Lace-up style Lightweight and breathable OrthoLite® footbed for comfort Rubber outsole for grip