Require rigid or structured support to prevent overpronation (feet rolling inward). Look for "Max Support" or deep heel cups.
Different activities place unique stresses on your feet, necessitating different insole technologies: Premium Insoles For Comfort & Pain Relief
Choosing the proper insoles depends on matching the material and support level to your specific foot shape (arch height) and activity (running, standing, or casual wear). Proper use also requires removing your shoe's original factory liners before inserting the new ones to maintain a correct fit. Choosing by Foot Type
A podiatrist can help determine your specific arch type, but general guidelines from The Insole Store and REI Expert Advice include:
Need cushioned, semi-flexible support that "brings the ground up" to meet the arch, distributing pressure away from the heel and ball of the foot. Choosing by Activity
Benefit from a mix of cushioning and stability to maintain natural alignment.