DeFeet has conducted extensive wind tunnel testing on their new product, the EVO Jet™ sock, and found that it demonstrates market-leading aerodynamics. The testing showed that at a speed of 38 mph, the EVO Jet sock saves 24 watts over shaved, bare legs without socks. This suggests that the sock significantly reduces drag, making it a critical component in improving aerodynamics for cyclists.

Socks play a crucial role in aerodynamics because they have exposed, front-facing drag surfaces that rotate directly into the wind, leading to significant turbulence in that area. By designing socks with aerodynamics in mind, DeFeet aims to enhance the performance of cyclists, allowing them to ride more efficiently.

“Perhaps the biggest discovery in cycling aerodynamics in recent years has been that socks are in fact the lowest cost way to increase a racer’s efficiency at speed,” stated DeFeet founder Shane Cooper, adding, “Our test results showed remarkable savings in power efficiency measured in watts. Dollar for dollar, no other product on the market comes close in terms of energy savings.”

The introduction of the first aerodynamic sock, the Disruptor, in 2018 by DeFeet had a notable impact on the cycling world, with Quickstep rider Fernando Gaviria wearing them to win the first stage at the Tour de France and take the yellow jersey. This marked the beginning of the aero sock movement, with other brands also joining the trend and introducing similar products over the past five years.

In the 2023 Tour de France, Team Lotto – DSTNY received the earliest versions of the EVO Jet sock after Caleb Ewan finished second by inches in Stage 4. Rider Victor Campanaerts wore EVO Jet socks every day during the race and was honored on the podium in Paris as the most aggressive overall of the event. This indicates that the EVO Jet socks were well-received and effective during the competition.

The wind tunnel testing of the EVO Jet took place at the A2 Wind Tunnel in Charlotte, NC, under the supervision of renowned cycling aerodynamicist Heath Dotson. The testing was done using a human rider with yaw angles, ensuring realistic conditions for evaluating the sock’s aerodynamic performance.

EVO Jet socks will be available for purchase on starting in mid-September 2023, with a retail price of $55.00 per pair. Cyclists looking to improve their aerodynamics and performance may consider these socks as a valuable addition to their gear.


The information contained in this article is for educational and informational purposes only and is not intended as a health advice. We would ask you to consult a qualified professional or medical expert to gain additional knowledge before you choose to consume any product or perform any exercise.

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