Best insoles for flat feet (and high arches)
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Short answer
For flat feet that roll inward, choose a firm insole with an angled heel post, like the PowerStep Pinnacle Maxx. For average arches, the standard Pinnacle. High arches need a taller arch and deep heel cup, like Superfeet Green. The NHS notes insoles help with pain and stiffness but won't change the shape of your feet.
Illustration Best for flat feet
PowerStep Pinnacle Maxx Insoles
The Pinnacle shell with an angled (posted) heel that resists the inward roll common with flexible flat feet.
- Angled heel post for overpronation
- Firm arch support
- Deep heel cradle
- Made in USA
Skip it if: your arch is high and rigid.
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Illustration Best for average arches
PowerStep Pinnacle Insoles
A firm-but-flexible arch shell with a cushioned top layer and a deep heel cradle. PowerStep designs it to support the arch and cradle the heel.
- Semi-rigid arch support
- Deep heel cradle
- Dual-layer cushioning
- Made in USA
- Swaps in for the factory insole
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Illustration Best for high arches
Superfeet All-Purpose High Arch Support (Green)
A tall, firm arch shape with a deep heel cup. It fills the space under a high arch, which spreads pressure that would otherwise land on the heel and ball. It needs shoes with some depth.
- High-profile arch
- Deep sculpted heel cup
- High-density foam
- Formerly called Superfeet Green
Skip it if: your shoes are shallow.
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Wet-foot test
Wet your foot and step on a paper bag. A full, wide print suggests a low arch; a print with a thin outer strip suggests a high arch. It's a rough home check, not a clinical measurement, but it helps you choose between these three.