As the temperature begins to drop and your fellow riders start reaching for excuses, you should, instead, be reaching for a good base layer. Answering the call of your shivering bones, from old-school merino wool to futuristic synthetics, they’re a key piece of kit if you want to face down harsh winter conditions. Not only do base layers add insulation, they improve comfort and help wick away sweat. Clever lightweight designs can also keep you cool when summer rolls around again. Here are some of the best base layers to buy that will keep you feeling nice and toasty even on the most glacial rides.
Rapha Deep Winter Base Layer
What the makers say: Highly insulating merino base layer for training and racing in very cold conditions. Long-cut sleeves with thumb loops and a close-fitting hood for maximum insulation.
What we say: For absolutely blitz days. The balaclava-style hood keeps your head cosy – just about rolling down when not required. Thumb loops on the long sleeves close any gaps between gloves and jacket to lock out wind-chill, and the merino component capably deals with sweat and stink, with thicker fabric employed in the front-facing panels.
Verdict: You won’t find anything to keep you warmer. It also makes you look like a ninja – so win-win - 8/10
£120, rapha.cc
Hoy Vulpine Base layer
What the makers say: This soft, lightweight base layer will help regulate your temperature, taking moisture off your skin fast, keeping you comfortable, itch and odour free.
What we say: A simple, synthetic base layer with a cycling-specific design that features a subtly dropped rear hem. The cut is relaxed, particularly on the shoulders and sleeves, so it’ll suit riders with bigger arms or who want something less skintight. Supposedly odour neutralising, although it’ll survive a hotter wash, the recommended setting is only 30°C.
Verdict: A decent, affordable synthetic base layer that will also serve as a wardrobe workhorse - 6/10
£35, vulpine.cc
Isadore Merino Base Layer – Best in test
What the makers say: The natural characteristics of merino wool and a sensitively developed short-sleeve cut bring you an odour-resistant, perspiration-wicking and thermo-regulated piece of kit.
What we say: Made 30 miles down the road from the birthplace of current world champ Peter Sagan, it’s no surprise that this base layer has a pedigree. Whether it’s due to the fact that it’s made in a country where winter temperatures can drop to as low as -10ºC or the snug merino wool blend, it works perfectly. Looks tasteful enough for everyday wear too.
Verdict: A slick base layer that’s simple, but effective. Has a great fit and kept out the cold like a space suit – 9/10
£36, isadoreapparel.com
Altura Thermocool base layer
What the makers say: Sitting right next to the rider’s skin, this new high-tech long-sleeve base layer uses advanced moisture wicking and temperature regulation.
What we say: Almost like a compression top, the Thermocool squeezes you like a good handshake – it’s tight, but not overly so. The polyester material isn’t always the best for fighting off body odour, but by spinning in antibacterial yarn you won’t smell like a boiled kipper at the end of a ride. If you’re powerfully built, maybe choose a size slightly bigger than normal.
Verdict: A snug fit means you may need to go up a size, while smart moisture wicking stops you ending up in a sweaty heap – 7/10
£45, zyro.co.uk
Sugoi RS Core Base Layer
What the makers say: Our premium short-sleeve base layer uses a highly engineered material to regulate body temperature and enhance your sporting performance.
What we say: Although close-fitting on the bike, you can use this synthetic base layer for off-the-bike training too. Entirely synthetic, it’s extremely soft and hard wearing. Flat-locked seams mean it’s very comfortable to wear, but some riders might find the fairly wide collar a little on the draughty side.
Verdict: Super-soft material means this is a good alternative to many other itchier base layers already on the market – 7/10
£40, sugoi.com
Megmeister Drynamo Warm
What the makers say: Ultralight long-sleeved functional base layer with superfast moisture wicking and perfect climate regulation. Ergonomically designed with four-way stretch and a seamless finish to support optimum freedom of movement.
What we say: Looking like a base layer for astronauts, the thick nature of the shirt means you’ll stay pretty cosy. However, using tiny vents placed in groups around the shirt, any moisture is quickly wicked away. The seamless design and high-stretch fabric ensure it fits like a second-skin, giving gentle compression. There are no labels spoiling the effect either, but it’s safe to wash a 40°C.
Verdict: Futuristic design looks great with efficient venting. Weighty and thick compared to others – 7/10
£55, megmeister.com
Craft Warm Wool Base Layer
What the makers say: Ergonomic base layer made of merino wool & polyester. Very warm, but very wonderfully breathable.
What we say: Made of 34% merino wool, this base layer doesn’t quite have the softness or odour-killing abilities of some 100% wool alternatives. On the plus side, it’s happy being washed at 40°C. A slightly longer back works well, and it does an excellent job of trapping warmth despite its minimal bulk.
Verdict: Pairing wool and synthetics brings out the best of both – and a longer back works well when you’re out on the bike – 8/10
Brynje Super Thermo – Best value
What the makers say: Lightweight, super-efficient moisture transport capability insulates and dries better than anything.
What we say: Looking like something you might wear to an underground fetish club, this mesh number traps air against the skin to provide superb insulation. Retaining little moisture and being made largely of holes, it also remains toasty even when wet – whether from rain or sweat. The cut isn’t cycling-specific though, meaning it isn’t as svelte as some.
Verdict: Unique design provides maximum warmth and comfort if you can get past the odd look and relaxed cut – 8/10
£27, nordiclife.co.uk
Conquest Cycling base layer
What the makers say: The short-sleeve lightweight base layer is constructed from a technical dual-face fabric that has a twill-backed surface that’s designed to maximise moisture-wicking efficiency with minimal weight.
What we say: It may be nothing more than a skinny black thermal T-shirt, but thin fabric and flush stitching ensure a body-hugging fit that’s exceptionally comfortable, although its low bulk makes it one for warmer days.
Verdict: Great looking top for cycling and posing in warmer weather. Got a buff physique? You’ll get a few whistles – 7/10