On Track Pants Straight Leg in Black. Size S, M, XL. Self 1: 87% polyamide 13% elastane Self 2: 100% poly. Made in China. Machine wash. Elasticized waistband. Side zipper pockets. Back snap button pockets. Drawstring cuffs with drawcord. Zonal mesh ventilation. ONF-MP2. 166.00335.