This Women'S Trainer Is Made Using Premium Better Leather, Sourced From A Sustainable Tannery Rated Silver For Its Environmental Processes, And Also Responsibly Source Wool, Which Is A Renewable Fabric That'S Hypoallergenic And Helps To Keep Feet Comfortable In Any Weather Or Temperature. On The Inside, The Durable Lining Is Crafted From Eco-Conscious Rebotlâ„¢ Fabric Containing At Least 50% Recycled Plastic. These Responsibly Produced Materials Are Shaped And Honed In This Lightweight, Breathable, And Durable Trainer.