CHELSEA EVO 2 MID BOA S3 ESD HELLY HANSEN® boot with BOA® system, easy tightening and quick click opening. Breathable, abrasion-resistant polyester fabric made from at least 50% recycled material. Protective toe cap and anti-perforation composite insole (about 35% lighter and more flexible). Sole with maximum anti-slip index (SRC). Waterproof footwear thanks to the Helly Tech® membrane, providing maximum levels of waterproofing and breathability (preventing internal condensation next to the skin). ESD electrostatic dissipative footwear recommended for ATEX zones certified with standard EN IEC 61340-4-3:2018. Reflective details increasing user visibility and safety.