Forcefield Ultra Lite InsoleForcefield Ultra Lite Insole For Comfortable Pressing Every Moment These insoles are made of foam that easily adapts to the shape of the foot for ultimate comfort . They offer the ultimate in support, designed to reduce foot odor while preventing foot injury and blisters. Low friction Top cloth technology to reduce friction and prevent blisters Silpure technology helps reduce foot odor Impact reduction with return energy Deep heel groove for