Lurbel – Official Sockwear Sponsor of the Skyrunner® World Series

Lurbel is a specialist performance sockwear brand, renowned for designing technical socks and base layers engineered for endurance sports, trail running, and mountain racing. With a strong focus on innovation, comfort, and athlete performance, Lurbel has become a trusted name among runners competing in demanding conditions.

As the Official Sockwear Sponsor of the Skyrunner® World Series, Lurbel supports athletes racing across some of the world’s most technical and challenging mountain courses.

Skyrunner World Series Recommended Lurbel Products

Stone SWS Pro Four

The official sock of the Merrell Skyrunner® World Series.

Built for technical trail and mountain racing from 10 to 60 km, the Stone SWS Pro Four combines Bmax Tetra — Lurbel’s patented technology that accelerates sweat evacuation, reduces internal friction, and protects the skin at high intensity — with the new AWC Pro Sky plantar structure to keep the foot dry, fresh, and protected across demanding terrain. The Extra Adjustment fit locks the sock in place throughout long efforts, reducing internal movement on technical ascents and descents.

Track Four

Long-distance trail sock built for mountain terrain.

Designed for medium to long mountain efforts, the Track Four uses Bmax Tetra technology — for rapid sweat evacuation, reduced internal friction, and sustained skin comfort — across trail, mountain, and high-mountain surfaces. Its reinforced construction at 30 g provides reliable cushioning across extended distances where comfort over time is as important as performance.

Loop Three

2.5-liter race belt for mountain running and skyrunning.

The Loop Three distributes 2.5 liters of storage across four pockets — a 1-liter front pocket, two 250 ml side pockets, and a 1-liter rear pocket — keeping nutrition, gear, and essentials within reach on the move. Elastic straps secure walking poles, an integrated bib number holder makes it race-ready, and reflective strips add visibility in low-light conditions.

Who Are Lurbel?

Founded in Spain, Lurbel has built its reputation around advanced textile technology and sport-specific design. The brand specialises in high-performance socks and base layers, developed to reduce friction, manage temperature, and improve comfort during long and intense efforts.

Lurbel products are widely used by endurance athletes across trail running, skyrunning, road running, and outdoor sports, where reliability and comfort are essential.

Lurbel and Skyrunning

Skyrunning places extreme demands on athletes — steep ascents, technical descents, long race durations, and constantly changing conditions. In this environment, sockwear plays a crucial role in performance and injury prevention.

Lurbel’s partnership with the Skyrunner® World Series reflects the brand’s expertise in creating sockwear designed to perform in mountain racing conditions, helping athletes minimise friction, regulate heat, and maintain comfort over long distances.

Lurbel Sockwear Technology

Lurbel performance sockwear is developed using advanced materials and construction techniques specifically designed for high-intensity endurance sports, including:

Anti-friction zones to help reduce the risk of blisters
Breathable, moisture-managing fabrics to regulate temperature
Seamless construction for long-lasting comfort
Targeted compression and support areas for stability during movement

These features make Lurbel sockwear particularly suited to skyrunning, where comfort and reliability are critical from the first climb to the final descent.

Why Skyrunners Trust Lurbel

Lurbel’s commitment to innovation, athlete feedback, and sport-specific development has positioned the brand as a trusted choice among endurance athletes worldwide. As the Official Sockwear Sponsor of the Skyrunner® World Series, Lurbel supports skyrunners with technical apparel designed to perform when conditions are at their toughest.