What issues are you looking to address?
The types of insoles you'll find at REI are sometimes called "support" or "sport" insoles. They feature a harder material for structural support and stability, best for conditions like plantar fasciitis, structural misalignment, supination or overpronation.
Common footwear fit problems that insoles may help:
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.
Foot elongation: A supportive insole can create a better fit for those with significant foot elongation in one or both feet when measured standing as compared to sitting.
Low or collapsed arches: Direct arch support is uncomfortable for many people. A supportive insole stabilizes the heel and distributes pressure across the base of the foot, instead of concentrating pressure into the arch area.
Finding the right insole volume
Different insoles take up different amounts of space inside your footwear and generally suit different arch shapes better than others.
High-volume insoles are best for high-volume shoes such as hiking boots, ski boots or running shoes and high arches.
Medium-volume insoles work in average-volume shoes, like casual shoes and some athletic footwear, and a variety of arch profiles.
Low-volume insoles fit low-volume shoes such as cycling shoes, in-line skate boots or ski skate boots, and very low arches.
Read full article: How to Choose Insoles
