The parts Roger linked to are good options. Neat thing is the top two are VW parts if you're into junk yard shopping, and the bottom one is sometimes referred to as a mini bear claw, available in lots of places in addition to Watsons. Motor home repair part dealers, if you have any in your town, are one source to compare without shipping cost. Another one I've used is a Honda hatch latch (other small car might work too). Part of what might drive your choice is what kind of relief did Downs mold in, if any, to dictate pad size/shape.