If you have any of the following common fit problems, insoles may help. Insoles vary in heel and arch dimensions; an footwear specialist can assess your feet to see which type works best.
Heel slippage: A shoe that fits well in the mid- and forefoot but allows heel slippage or lift may be improved with a supportive, mid- to high-volume insole. This reduces excess volume in the rear of the shoe and stabilizes the heel of the foot, minimizing the heel slip that can cause hot spots and blisters.
Foot elongation: For those with significant foot elongation in one or both feet when measured standing as compared to sitting, a supportive insole can help. This reduces foot elongation when weight bearing, creating a better fit and lessening the need to size up when buying footwear.
Low or collapsed arches: People who have low or collapsed arches often ask for “arch support” insoles. What is really needed, though, is “foot support” which helps stimulate the arch muscles to be engaged and active. A supportive insole stabilizes the heel and distributes pressure across the base of the foot, instead of concentrating pressure into the arch area. Direct arch support is actually uncomfortable for many people since it inhibits the normal flexing of the foot.