Vass-Tex's 325 series fabric is an extremely waterproof and windproof heavy duty outer combined with a soft polyester reverse. This unique single skin material has the added advantage of bi-stretch properties (approx 10%) which gives the wearer extra freedom to move. These garments are very hard wearing, comfortable and provide a very high level of water protection to the wearer. Vass-Tex 325 series is certified to the latest Flame Retardent Rating EN ISO 14116:2008. (note the 325 series is lighter in weight than the 550 series) Press studded hem and cuff for adjustment Brace fixed lock and box-stitching reinforcement Extreme Wind Resistance Polyester reverse with bi-stretch properties for comfort & strength Special Flexible & Hardwearing PVC Outer Coating Extreme Waterproof Protection