The Chelsea Evolution 2 Mid S3 is built for use on dynamic job sites where you need lightweight protection that provides all-day comfort. The Chelsea Evolution collection concept has been updated with a high rebound EVA midsole and Ortholite® X25 Hybrid footbed for more comfort. And is the new version of the Chelsea collection. Helly Hansen has also updated the breathable and moisture-wicking lining materials with at least 50% recycled content. And the new streamlined design includes reflective details for improved visibility on and off the job site