Product details:

Patagonia's burly new Gritstone Rock Pants offer mechanical stretch and a comfortable organic cotton/polyester fabric that has an antimicrobial finish. The OppoSet adjustable waist creates a low-bulk, customized fit, but keeps the low-profile belt loops for the old school crew. Drop-in pockets lie flat and have breathable mesh pocket bags, and the sleek side pocket has an elastic mesh envelope to hold valuables. An articulated pattern with gusseted crotch enhances movement and comfort under a harness, while the reinforced knees add durability and accommodate knee pads for prolonged aid sessions. The pair of rear pockets add durability when butt-scooting down descent slabs. A DWR (durable water repellent) finish keeps your spilled beer from soaking in.