CHEMMAX3 highest level of Lakeland Chemical Barrier Protection Suits (CT3S428) have EVOH barrier film which provides the ultimate chemical barrier film in disposable materials. Despite the high chemical barrier,ChemMAX 3 material is suprisingly soft flexible and light. Reinforced knee-pads for comfort and durability. Constructed with stitched and taped seams for superior protection and strength. Anti-Staitic:Meets the requirements of EN1149. Design features for double zip / storm flap front fastening for improved protection and quick and easy donning and removal.