Foamtreads Slippers and Slipper Boots Foamtreads is a Canadian owned and operated company that has been selling slippers in North America since 1948. They proudly offer one of the largest and most comfortable slipper lines in the world! All their outsole compounds are 100% natural plantation rubber and are tested to meet the highest standards. Their uppers are from imported materials (Italy, Brazil, Korea and Canada). The lasts and molds are developed and sourced directly from Italy with true full and half sizes plus medium and wide widths. Foamtreads are simply not only the most comfortable slippers you will ever wear, they will become part of your family.