UA Storm technology repels water without sacrificing breathability Ultra-durable, ripstop stretch-woven fabric is tough enough to put up with anything in the field Super-comfortable waistband stretches with you as you move Articulation built into the knees for added mobility Open hand pockets with interior knife pocket & secure, zip back pockets & side leg pocket These pants give you all the stretchy, lightweight athletic performance you expect from UA, plus all the durability you need for the job.