Hipora has solved the biggest problem inherent in the comventional waterproof film. Hipora has the secret in the unique polyurethane coating technology. That is, numerous number of micro pores (abt. 9 billions/ 1 inch 2) of the minimal size (0.1-3u) are placed all over the polyurethane coated film. They shut out the water from outside, but allow the moisture or warm steam from the body go out. When the body perspires from strenuous work on exercise the perspiration easily escape leaving the wears feeling comfortable.
Rain > Hipora > Moisture