Wonderflex World

You have found the suppliers of all things WONDERFLEX® and FOSSHAPE®.

Home of the leading heat activated composite material and heat activated fabric.

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Both WONDERFLEX® and FOSSHAPE® materials have been used for: theater, costumes, millinery, mask or armor making, puppetry, props, cosplay, craft work, mount making, model making, and set design. These are truly “limited by your imagination” thermoplastic materials.




The heat activated composite material, which contains its own adhesive, is often referred to as the “Celastic” replacement product. This pliable, scrim-reinforced extruded composite is a revolutionary new material, with a smooth surface on one side that can be molded or formed once it’s been heated.

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Image: Casabella Cosplay


Often called the “buckram replacement”, this unique felt-like fabric (45″ wide or 114.3 cm) is heat activated to achieve rigidity, stiffness and surface enhancement without the use of water, messy or hazardous additives. Synthetic FOSSHAPE® can easily be cut with scissors, will not fray like conventional woven fabrics and can be readily sewn to itself or other fabrics as a hidden stiffener or shaped into stand alone structures.

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