Organic cotton.
Note: This style runs small, so go one size up to get the perfect fit.; Outsole: Amazonian rubber, silica mineral, synthetic rubber. The laces? Veja Rio Branco Sneakers in Tonic Black Moutarde, Size IT 38: Done in a bold palette of mustard and black, these retro-looking sneakers are every bit as environmentally conscious as they are cool.A.