JAMES PERSE Straight-Leg Cotton-Jersey Sweatpants

If utility and versatility are what you're going for, you don't have to look much further than James Perse's sweatpants. Knitted from loopback cotton-jersey, they're cut with a wider-than-average drawstring waist that feels really secure - they'd even work for quick jogs or trips to the gym. The elasticated cuffs subtly taper the fit.