Color: blackFastening: lacing, VelcroSpecifications: OrthoLite® insole, Gore-tex waterproof membrane Sustainability: use of recycled materials, material from recycled PET bottlesMaterial: cowhide, recycled polyester, rubber, recycled PET bottlesWashing and maintenance: wipe witha damp cloth Skin characteristics: Leather is a natural material of animal origin that has its typical properties such as scars, pigment spots, abrasions or wrinkles.