Socks

Synthetics (Coolmax, technical polyester) dry faster and are suitable for intense exertion; merino is more comfortable and naturally antibacterial. Synthetic socks (Castelli, Giro, POC) offer excellent moisture-wicking and quick-drying properties for long summer rides. Merino (Rapha, Maap, SockGuy) regulates temperature better (warm in winter, cool in summer), is naturally odour-resistant and less irritating to sensitive skin. For winter rides, merino or thermal blend socks are more suitable.

Technically yes, but specialist cycling socks offer significantly superior comfort and performance. Generic sports socks can create creases under the sole, which cause pressure points during long rides in stiff shoes. Cycling socks are made from a specialised fabric with no seams under the sole, reinforced compression zones at the ankles and a breathable mesh on the back of the foot. For occasional rides of 1 to 2 hours, a good-quality running sock may suffice. For regular long rides, dedicated cycling socks prevent blisters and numbness.

Long socks in merino wool or Thermo Double Layer, waterproof or simply thermal depending on the conditions. Thermal cycling socks (Castelli Estremo, Gore Wear Thermo) are thicker, rise higher up the calf and sometimes feature a windstopper lining on the front. Waterproof socks (Defeet Woolie Boolie, Sealskinz) are useful in heavy rain or when crossing streams and muddy sections. For temperatures between 0 and 5°C, the combination of thermal socks and thin oversocks is more effective than a single pair of very thick socks, which could constrict your feet.

After every ride, without fail. Cycling socks accumulate sweat and bacteria after every ride. Delaying washing leads to persistent odours that are extremely difficult to remove. Merino wool socks can go for two light rides between washes thanks to the natural antibacterial properties of the wool. Wash at 30°C or by hand, without fabric softener, and air-dry (a tumble dryer set to a high temperature destroys the elastic fibres in Lycra).

Compression socks improve venous return and can reduce calf fatigue on long rides. Graduated compression (stronger at the ankle, decreasing upwards) promotes blood return to the heart and reduces the build-up of lactate in the muscles. Studies show a measurable benefit for rides lasting over 3 hours. Today’s knee-high socks (20 cm) provide gentle compression without being medical-grade stockings. For post-ride recovery, calf compression sleeves (CEP, Compressport) are even more effective.

The size of cycling socks corresponds to your shoe size. Brands use shoe sizes (38/40, 40/42, etc.) or sizes S/M/L/XL corresponding to ranges of shoe sizes. Some brands (Castelli, Assos) follow the strict European sizing system, whilst others (Giro, Rapha) have their own conversions. For very tight-fitting knee-high socks, if your size falls between two sizes, choose the larger one to avoid compressing the ankle.

Wash at 30°C with a mild stain remover, rinse thoroughly, and dry in the shade. White cycling socks turn yellow due to sweat (mineral salts and amino acids that oxidise the fibres), chamois cream residue and UV exposure. Soak the socks in cold water with Marseille soap before machine washing. Avoid bleach-based products, which weaken the Lycra fibres. Drying in direct sunlight promotes yellowing: always dry in the shade. Slightly yellowed socks remain functional, even if less attractive.

Castelli, Assos, Rapha, Maap, POC and Giro kit the majority of WorldTour teams. Castelli (Trek, Alpecin, Intermarché teams) is often cited for its quality of workmanship and the durability of its fibres. Assos kits Swiss and German teams. Rapha kits the EF Education teams. For amateur cyclists, these brands offer excellent value for money in terms of quality and durability, at €15 to €35 a pair. Very decent, lower-cost alternatives include Defeet, SockGuy, and Decathlon’s Van Rysel ranges.

Yes, high-cut cycling socks are well-suited to running and triathlon thanks to their seamless construction. The seamless construction under the sole and the gentle compression around the ankle provided by cycling socks are also beneficial for running. However, cycling socks are often thinner and offer less padding in the heel and forefoot than dedicated running socks. For triathlons, it is common practice to use knee-high cycling socks as running socks, as they are quick to put on.