• 5 layer stackable Shock Absorbing layers allows you to increase your height from 0.9 to 2.7 centimetres. 
• Made from high quality gel, the top most layer can also be used on its own to acts as a shock absorber to protect against heel pain. The soft press gel acupressure lobes on the top layer promotes circulation and comfort to relieve pressure and fatigue.
• U-shape heel cup allows your heel to fit comfortably within the curve of your sole to increase stability.
• Easy to use: Align the mounting holes between the pads and press together. Please install the shortest pad at the bottom.
• Do not use if you experience vertigo, giddiness, poor balance or are prone to falling.