Mons Royale's Redwood 3/4 raglan t-shirt is one of a host of designs offered by the New Zealand-based tech clothing company. Made from 83% Merino wool, this t-shirt is designed to keep you cool when it's hot and warm when it's cold – even when you and the t-shirt are wet – all without looking out of place both on and off the bike. Merino wool comes from the Merino breed of sheep that are famed for their ability to withstand cold in the winter and heat in the summer thanks, mostly, to their highly-technical fleece. Not only does Merino wool regulate your temperature, its anti-bacterial properties help reduce pongy pits after you've given it plenty of effort on the trails.