The Soleeze Spring Loaded Insole provides your feet, back, hips, ankles and knees with ultimate support and comfort. A deep heel cup provides ankle stability. Arch support helps maintain foot balance. A diamond patterned EVA helps maintain a constant flow of air circulation, while five heel support springs provide recoil to add energy and minimize repetitive stress. Seven ball support springs and honeycomb padding raise the ball of the foot. A comfort top layer is treated to be anti-bacterial and anti-fungal. Enter MASONRY at checkout for 40 percent off and free shipping in the United States.