Base layers
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It's a real challenge to stay cool on the bike when the temperature rockets (Pic: Sirotti)
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Several brands now include a 'string vest' base layer in their range. dhb's offering is seamless
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A number of manufacturers now offer jerseys made specifically for hot conditions. The R&D Ultralight is Sportful's version and is made from a super-light, semi-open 'Diablo Mesh'
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The Isadore men's bib shorts are treated with Coldblack to stop the black fabric soaking up heat from the sun
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The highly perforated Rapha Climber's shoes are specifically designed for riding in hot conditions
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Morvélo's Pois socks are made from a blend of lightweight fabrics to improve breathability
Base layers
The idea of wearing an extra layer in height of summer may sound like madness, but we can assure you there’s a definite method here. Base layers provide much more than insulation and, in the case of lightweight, mesh summer base layers, they play an important part in wicking sweat away from your body and keeping you dry.
The beauty of a summer base layer, as well, is that it’s still very useful for layering come winter, so you’re not spending money on a genuine season-specific item.
One of the keys is to make sure that you buy a base layer in the right material. Merino, for example, is fantastic for cold and milder days, but you’re not going to want it on a blazing hot summer’s due to its insulating properties.
For a summer base layer, synthetics are the way to go. Construction-wise, mesh is a good choice for hot conditions, as it aids cooling as well as facilitating wicking. Wicking, for anyone who doesn’t know, is the movement of moisture away from the surface of the skin and it’s really important for bike clothing because it helps to keep you dry (dry being a relative thing, of course) which, in turn, keeps you comfortable. Most major manufacturers offer a mesh base layer designed for hot summer conditions.
The other thing to think about is design. No, not the aesthetics, it’s more basic than that and essentially boils down to the choice between sleeveless or sleeved. There are benefits to both but the main positive about a sleeveless base layer is that you don’t have the irritating task of trying to make two sets of sleeves (on your base layer and jersey) sit correctly against each other – even harder if your jersey is a tight aero fit. Obviously it’s a personal choice, but definitely something to consider.