Fit Guide: PLEASE GO UP A SIZE, these fit small. 

Upper in C.W.L, cotton coated with PU and resin from the corn waste industry
Panels made out of C.W.L and coated canvas
Logo V made of rubber 
Lining in jersey (33% organic cotton & 67% recycled polyester)
Insole made out of wild rubber and other synthetic materials
Sole made of wild rubber from the Amazonian forest
Made in Brazil, in the region of Porto Alegre.