The Ultimate line delivers the warmth needed for the Mid-Atlantic winters and lives up to its name. Zerofit brand may be new to the US market and may require a little leap of faith because you probably cannot find it in stores, but those who are willing to take the leap will certainly find high performing clothing for cold, cold mornings.

I really liked the ZeroFit Heatrub baselayers as they did everything that they claimed they could. Both felt lightweight and didn't restrict my movement, they definitely did a good job of keeping me warm, and the fact that they were relatively water resistant was also a nice bonus. The samples I tried were pretty plain- black and grey- but I've seen a couple of other colour options including red and navy too so you can match up with the rest of your gear you usually wear.

As golf’s Open Championship returns to Sandwich and Royal St George’s Golf Club this week, we spoke with Getty Images photographer Ross Kinnaird who has been responsible for capturing some of the most iconic images in all conditions from that tournament over an illustrious 40-year-career.