Outdoor specialist W.L. Gore & Associates has developed a 3D footwear insert for use in knitted uppers that is designed to contour to the shape of the foot like a sock. Gore says it recognised the opportunity to develop the Gore-Tex 3D Fit footwear inserts following the growth in popularity of mesh, elastic, knitted athletic footwear suitable for everyday use. Part of the Gore-Tex Guaranteed To Keep You Dry product brand, this latest development gives footwear manufacturers access to a waterproof, breathable insert offering seamless comfort in a lightweight stretchy material that can be used in a variety of lighter-weight athletic and lifestyle shoes.