The ARX-20 Thermo Smock is an enhanced version of the standard Imax Ocean Thermo smock offering more insulation, comfort & durability. Key features include a non rust zip, neoprene cuffs & a side zips making it easier when taking the smock off. It has been designed as an over-garment, so please take this into account when selecting the size required. (Select correct size from size chart menu.) Size medium-XXL100% waterproof. Taped seams. Smart & comfortable smock. Durable 100% polyester pongee shell. Fully insulated polyester padding. Fleece-lined handwarmer pocket. Comfort zone down to -20 degrees. Wide elasticated neoprene cuffs with velcro adjustment. Quality front zipper with double windfillet.