Simms Guide Pant. GUIDE TESTED AND RESPECTED, UPF50 MEETS COR3™ RIVER-READY CHEMISTRY. Stretch your season with the mobility-activated comfort of Simms’ bomber Guide Pants. A COR3™-activated fabric blend of nylon/spandex wicks moisture, shields sun, and neutralizes odor, while articulated knees and a gusseted crotch make getting into prime casting positions effortless. Storage solutions include one zip and hook-and-loop secure cargo pockets, zip-secure back pocket, slash hand pockets tailored for accessories, and an internal cell phone stash. Traditional Fit and a plush, adjustable brushed tricot-lined waist come standard.