This professional version of the Boston clog is fitted with a super grip sole for extra workplace safety, ideal for use in the catering sector. The super-grip sole is comprised of two components: a nonslip, oil- and grease-resistant outsole made of rubber and a shock-absorbing midsole made of light, flexible EVA. Made from premium leather, this classic clog can be adapted to all feet thanks to a strap on the upper edge of the shaft and a sturdy metal buckle. UK Size: 3.5. EU Size: 36