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Again and again, Otto Bock has developed innovative materials for prosthetic and orthotic fittings that have become part of everyday lives for those with physical disabilities. Polytol® is one of these innovative materials and is used for the fabrication of flexible inner sockets of prostheses. Polytol® is a high-quality, colorless, transparent, polyurethane-based three-component lamination resin. Polytol® is permanently elastic and provides good skin adhesion. In defined areas, Polytol® has a higher permanent elasticity than acrylic resins. Polytol® contains no irritating or allergenic components.