Tuli's Roadrunners Insoles Size:X-Large It decreases the tensile forces

It decreases the tensile forces placed upon the Achilles tendon via the dissemination of forces resulting from a muscular contraction

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It's soft/medium density helps to prevent muscle guarding

these are the most comfortable and longest-lasting insoles on the market

Tuli's Roadrunners Insoles Size:X-Large It decreases the tensile forcesGive your shoes and your performance a boost with RoadRunners replacement insoles! Tuli's RoadRunners deliver a premium replacement insole that actually stores and releases impact energy. By combining Tuli's unique multi cell design and a specially formulated polyurethane and Poron material, we created RoadRunners, an insole that can actually improve physical performance while the built in arch support stabilizer reduces fatigue and protects your feet