UHMWPE is tough but flexible... but for serious shaping, it needs to be heated. I used a small propane torch: just as the material BEGINS to get clear, it can easily be bent to shape... but then hold it in position for 15-20 minutes to allow it to cool. Once it's cool, it will return to its normal milky-white appearance. It really retains heat well and will definitely burn your fingers if touched too soon!