RAB says about the Firewall Pants
Protective waterproof pants constructed with hardwearing, breathable 3-layer Pertex® Shield offering next-to-skin comfort. They're easy to pull on in a sudden shower thanks to the 3/4 zip, and deliver total freedom of movement on mountain hikes. 3/4 length YKK® side zips with internal storm guard and triple pullers. Elasticated waistband with elastic and drawcord adjustment. Drawcord adjustable hem to accommodate different footwear. Long length gusset and knee articulation for ease of movement