High elastic shock ball: The bottom yellow part is the new high elastic shock ball. It has obvious advantages over traditional booster cushions, providing a comfortable foot feeling, providing effective heel support and absorbing heel shock when walking. Strength, relieves heel pain. Reduces fatigue: Good cushioning can reduce the effects on joints and muscles. The U-shaped heel helps maintain stability and position the heel naturally to make your heel more comfortable. Anti-slip: With a sticky honeycomb bottom, the sole does not move when it is placed in the correct position inside the shoe, reusable 4-layer construction: Soft TPR + velvet + U-bracket and honeycomb design to fully absorb vibration and reduce pressure on the feet with every step. Lighter and more durable, it provides sufficient support for your high heels. For men and women: with 3 heights available to lift the sole, S (1.5 cm), m (2 .5cm), L (3.5cm), three heights selectable for different occasions, no one will know your secret to increasing height