Sidi Nix review: a performance winter boot that, with the brand’s new fit, makes a lasting impression

Nike Poobahs are back! Well, not really, but the pastel colours and prominent ankle strap of the Sidi Nix reminded me of my first, slightly garish MTB SPD shoes. The Nix are part of Sidi’s comprehensive range of winter road, gravel and MTB footwear and are billed as “A performance road shoe primed for cold weather”, although they are clearly more of a boot.

The decision whether or not to take the plunge and buy a pair of dedicated winter cycling shoes is one that a lot of committed riders face at some point – extra warmth, protection and comfort paired with less faff than overshoes makes them an attractive proposition if you spend a lot of time riding in cold and wet conditions. Furthermore, you won’t be getting your shiny summer shoes grimy and you can size up the winter boots to allow for nice thick socks. Although there can be a significant cost involved, this is offset by the reduced wear on your summer shoes.

Typically, winter cycling footwear will have a higher-cut ankle, waterproof membrane and some form of insulation, along with a roomier fit and slightly less stiff sole than a summer race shoe. It’s hard work keeping feet warm on cold days; they are stuck out at the furthest extremity from the body and are largely immobile while riding. Warm winter tights and long socks help to keep the warm blood at a higher temperature on its long journey to your feet, but the more insulated your shoes, the better. The trade-off is weight, bulk and ride ‘feel’ – big, padded boots can feel clumsy and sloppy on the bike.

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