Frontline Pro by ALES GREY is an extremely innovative and sustainable clog, designed to revolutionise the world of professional footwear. Designed and conceived in California by the ALES GREY team, the Frontline Pro clog has won over the workers of the most important retail, food and healthcare chains in the United States thanks to its formulation with XL EXTRALIGHT® Organix 3.0, composed of 30% circular and recyclable organic raw materials, thanks to its completely decomposable and seamless design.