eQuick eShock Show Jumping boots are the most shock absorbing horse boots in the market. Actually 4 times more then any other boots on the market. It has been tested and proven. The e-Fluid system is the reason for this shock absorption. The principe behind that blue bubble is simple. All impact in a fluid are absorbe by the movement of that fluid. Think of a punch in the water. The ripple made by the impact is the proof of absorption. The e-fluide will spread and disperse the impact through the boots. No more bruises on the tendon with the eShock!