The base on this system is made from ultra-lightweight, comfy, cool French lace, with a thin poly perimeter around the sides and back for added durability. The hair is 100% human, carefully treated with the same process we use on our custom systems to be as soft and smooth as naturally growing hair. The hairline is the same high-definition hairline we use in many of our best-looking custom hair systems. The knots are bleached so they blend into your skin and the hair will seem to be growing RIGHT OUT OF YOUR SCALP!