What are the Dual Colour TPE Gel Insoles? The dual colour TPE gel insoles provide up to 75% more cushioning compared to regular gel insoles to ensure complete all-day comfort. Engineered for maximum shock absorption, these durable gel insoles are guaranteed to not rupture or leak. How do the Dual Colour TPE Gel Insoles Work? With a massaging wave system, these high quality gel insoles feature grooves in the gel that act like tiny springs to absorb impact on pressure points in the heel & the ball of the foot. The gel insoles are also contoured for maximum comfort, & they provide enhanced support in the heel & arch. What sizes are available? The TPE gel insoles come in mens & womens sizes, & can be trimmed to fit.