Crew Socks Navy Clothing Size:4-7 Optical heart rate sensors work

Optical heart rate sensors work by using light to measure blood flow in capillaries beneath the skin

Crew length running socks that are comfortable

Its wider design combines with a carbon-fiber plate and underfoot flex grooves for a propulsive and stable feel as you take off down the runway

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Crew Socks Navy Clothing Size:4-7 Optical heart rate sensors workCrew length running socks that are comfortable, breathable, and designed for the demands of every type of run. Made with a temperature regulating Softair yarn and featuring targeted compression for maximum support, the SOAR Crew Sock is designed to perform on runs of any distance or intensity, making them a vital component for every runners kit bag. An open mesh construction on the upper midfoot and ankle allows for optimal air circulation, helping to