Composites

In an article of manufacture having a surface which is subjected to flexing and at least one of puncturing, abrasion, stress, color instability or wear, the improvement wherein said surface comprises a flexible composite comprising a high tensile strength organic fibrous component dispersed within a flexible or resilient polyurethane matrix which is formed in situ about the fibrous component at a temperature up to about 120.degree. C. but below the melting point of the fibrous component by positioning the urethane-forming reactant components about the fibrous component and allowing the urethane-forming reaction to occur, the fibrous component and urethane-forming reactant components being such that the matrix and fibrous component are chemically unbonded to each other whereby the composite retains essentially the flexibility of the polymeric matrix and the fibers of the fibrous component remain able to move freely of the matrix within the matrix, the flexibility of the composite being such that the composite may be bent or distorted until some or all its fibers are snubbed by the bent or distorted matrix such that their mobility at their interfaces with the matrix is reduced, the energy stored in the bent or distorted composite helping the composite to recover to its original unbent or undistorted form when the distorting force is released.