Featuring -Furnace thermal lined chest panel50% Airlite Superflex ZG300 NeopreneSuper flexible Nylon spandex jersey´s laminated to an airlite foam core. This material is incredibly flexible yet durable.GBS ConstructionEPP Ergonomic performance panellingContour FlexStrategically placed under arm and side panels for maximum flexibility.Chafe free strategic seam placement3D Moulded Supratex KneesAbrasion resistant 3D moulded knee pads for flexibility and durability.Single layer raw edge collarZip StrutRemoving any stress applied to the zip head, a small but important solution to any abuse to the zip.