Colour: Dark green Fastening: lacing Sustainability: use of recycled materials Material:  Outer part - cowhide Inner part - recycled polyester Inner part 1 - pig skin Inner part 2 - cowhide outsole - rubber Material Type: Genuine Leather Skin properties: Leather is a natural material of animal origin that has its typical properties, such as scars, pigment spots, abrasions or wrinkles.