This pair of grey and mint ballerinas is a combination of two contrasting natural materials ï¾–Vegetable Tanned leather, leather which is tanned using vegetable matter and tannins derived from the bark of oak trees and Jute, a coarse, strong fibre made from the stems of a tropical plant. This footwear is from the Green Line Collection of the brand. By making use of the natural or recycled material, the brand in collaboration with NGO's is doing their share to restore the environment.