Named after the track where Roger Bannister ran the first sub-four-minute mile, Iffley Road is adored by runners because it neatly wraps new-school fabric tech in old-school inspired designs. Its new sleek gilet keeps your torso toasty while you rack up the miles, but unlike some jackets doesn't retain so much warmth as to leave you overheating. The clincher: Packs into a bag in the back of the gilet that has a small rivet which allows you to wring it out once it is stowed away.