Propet are a company that manufacture walking shoes and have a dedicated website for sales in the US. Alternatively, Propet shoes can be purchased from other online footwear retailers such as PlanetShoes or Zappos which operate in the US.
Arabic numerals are called that because the European interpretation of those numbers comes from the Arabs. The numerals are called Arabic numerals (even though they do not resemble modern Arabic numerals in the slightest) to distinguish them from Roman numerals.
Because they were used in Ancient India. The Arabs learned them from here and spread to the world. That's why in the beginning the Europeans called them Arabic numbers but the arabians itself called them Hindu numbers. So now they are jointly called the Hindu-Arabic numbers.