Ah, the trusty sweatpant, jogger, trackpant... a rose has many names. But the thing that separates these from your standard bit of fleeced trousers is in the luxurious details. Over to the side? Those are a Burberry design with an eye-catching Peter Saville print on each side. Below? That's a Gucci pair of trousers with supple lambskin trims. Off-White's green and black style juggles comfort with more tech-sportswear leanings.And then there's Valentino, mixing archival logos with breathable cargo pockets, that are cool, comfortable and casual all at the same time.