FlexFoam-iT!™ IV Tuff Stuff is a castable and flexible urethane foam. Tuff Stuff has relatively high tear strength for a low-density foam. It is also stiffer and slightly harder to compress than other FlexFoam-iT!™ products.

FlexFoam-iT!™ Series foams are premium quality water blown flexible foams that can be used for a variety of industrial, special effects and art & crafts and projects. With several to choose from, uses include making theatrical props (swords, knives, hammers, etc.), industrial gaskets, custom padding and cushioning, and more. SO-Strong™, UVO™ or IGNITE™ colorants can be added for color effects.

Part A and B liquids are combined, mixed and poured into a mold or other form (apply release agent if necessary). Mixture will rise and cure quickly to a solid, flexible foam. Foams vary by density and offer good physical properties.