GORE-TEX Fabrics take protective clothing to another level: they're fully waterproof and windproof; and highly breathable to avoid heat build-up.They can also withstand high water pressure and severe mechanical stresses, Outer fabric is fully seam sealed for maximum protection against the elements whilst remaining breathable to allow wearer to work in comfort, The collar is shaped and contoured for compatibility with hard hats and can be combined with a detachable hood GTHV161OR when necessary, GTHV161OR hood to be purchased separately, Approved to BS EN ISO 20471: 2013 Class 3, EN343: 2003 3:3, RIS-3279-TOM , EN ISO 13688: 2013, Outer fabric 100% polyester with ePTFE membrane , Washable at 40° and Industrial Laundering