Boss Tracksuit Pants in Black. Taken from the more laid-back casual bodywear collection, these black cotton-rich piqué blend tracksuit bottoms have a regular rise with ribbed elasticated cuffs, drawstring hem and 2 side slash pockets. Branding comes in the shape of an embroidered white logo to the thigh area, signature stripe flag tab and contrasting trims throughout. Complete the look with a matching Boss tracksuit top