Pillar Cargo Pants in Nero Collegium pillar pant black Prana Black Bootcut Pillar Yoga Pant (2) Marmot Pillar Softshell Pant Men's Clothing. versatile in design, the pillar pant in black features a relaxed fit with a tapered leg and full length hem. finished with front pleats, angled side pockets, a fly opening and covered elastic at the back waist. cut in a soft fine stretch twill, style with the conviction top and loft ankle strap heel for an elevated take