GRF

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"GRF is engineered around the principle of Ground Reaction Force — the energy the ground pushes back at you every time you land. Millimetre-calibrated silicone zones on the outside of the sock stabilise the foot at impact and convert that shock into propulsive push-off."}]},{"type":"paragraph","children":[{"type":"text","value":"Less energy wasted on landing. More returned to the next step. The biomechanical sock for running, multisport and any dynamic movement where the foot meets the ground hard."}]}]}