Athleisure has proved more of a marathon than a sprint, continuing to influence designers well into AW17. A brand that tends to eschew seasonal trends, <a href=" http://www.selfridges.com/cat/whistles/" style="text-decoration: none"><font color="black"><b>Whistles</b></font></a> can’t resist the laidback allure of sportswear, including this slubby<b> top </b>in its latest edit. Its racerback references workout gear, while cross-over detailing adds a sculptural element. Step up to the sartorial starting blocks with skinny-fit jogging bottoms and low-top trainers.