Unisex Marathon Infrared Fiber Run & Fitness Socks

The Ultimate Run Sock. Three Technologies. Three Lengths.

The Unisex Marathon Infrared Fiber Run/Fitness Sock is Accapi's most technically advanced run sock — combining infrared fiber, EQT Equilibrium Technology, and AEC Adaptive Ergonomic Compression in one precision-fit sock. Available in ankle, 1/4, and knee lengths for every distance, every discipline, and every training environment.

Infrared Fiber — Run Further with Warmer Feet & Less Fatigue
Accapi's infrared fiber continuously improves circulation and muscle oxygenation — reducing foot fatigue and in-shoe swelling so you can push further on every run. Whether you're racing a 5K or grinding through an ultramarathon, your feet stay fresher for longer.

EQT Equilibrium Technology — Better Form, Better Feel
Accapi's proprietary EQT technology is tuned to your body's natural equilibrium — improving stability, balance, and proprioception throughout your run. Better body awareness means better running form, increased agility, and more efficient movement mile after mile.

AEC Adaptive Ergonomic Compression — Maximum Foot & Muscle Support
Light AEC compression supports the foot and key muscle groups, reducing muscle oscillation during exercise — minimising soreness, delaying fatigue, and supporting faster recovery after training and racing.

Three Lengths — Choose Your Coverage

Ankle — low-profile coverage for warm conditions and short distances. Features Accapi's unique Protective Flap for enhanced blister protection on long runs
1/4 — versatile mid-coverage for training and racing in all conditions
Knee — maximum coverage and compression support for long distances and recovery

Precision Fit Construction
Reinforced heel and toe, flat toe cap junction, and accordion elastic forefoot band combine for a precise, ergonomic fit that stays in place from the start line to the finish.

Perfect for 5K, 10K, half marathon, marathon, ultramarathon, triathlon, gym, and CrossFit training.

Key Features: