Best Insoles for Flat Feet · Superfeet vs PowerStep

Superfeet vs PowerStep for Flat Feet

For most flat feet, we lean PowerStep: the Pinnacle family offers a moderate arch, a low-arch version and a posted Maxx model, all pre-sized. Superfeet is the better choice for slim shoes, with its thin Low Arch model, which is the one Superfeet points flat-footed buyers to. Skip the Superfeet High Arch (the old Green) if your arches are flat.

Checked October 2026 · general information, not medical advice

Two unbranded orthotic insoles side by side on a wooden table, one blue and one dark grey

Our top 3

Top picks at a glance

Best PowerStep for flat feet#1
PowerStep Pinnacle insole

PowerStep Pinnacle

Premium price range

Moderate arch, semi-rigid shell, deep heel cradle; pre-sized.

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Best Superfeet for flat feet#2
Superfeet All-Purpose Support Low Arch insole

Superfeet All-Purpose Support Low Arch

Premium price range

Thin, firm low-arch model for slimmer shoes, even some without removable insoles.

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Best for overpronation#3
PowerStep Pinnacle Maxx insole

PowerStep Pinnacle Maxx

Premium price range

Firmer shell and 2° posted heel for arches that collapse.

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Brand vs brand, at a glance

PowerStepSuperfeet
Arch heightsPinnacle (moderate), Pinnacle Low, Pinnacle Maxx (posted heel)Low, Medium and High Arch models
ShellSemi-rigid polypropyleneFirm stabilizer cap over dense foam
FeelFirm shell, foam and EVA cushioning on topFirm, closer to the shoe
SizingFull sizes, usually no trimmingLetter sizes spanning 1.5 shoe sizes, trim-to-fit
ThicknessFull-length, dual layer; 3/4 version for tight shoesThin (Low Arch) to Max (High Arch)
Lifespan (brand)6 months or longer with casual wearAbout 12 months or 500 miles
Pick for flat feetPinnacle, or Pinnacle Low for very flat archesAll-Purpose Support Low Arch

In detail

Who each one suits

Specifications are each brand’s own; fit notes draw on podiatry sources and independent reviews. We did not lab-test these insoles.

PowerStep Pinnacle insole
Premium price range
Best PowerStep for flat feet#1

PowerStep Pinnacle

If you have flexible flat feet (the arch reappears when you sit or stand on tiptoe) and you have never worn an orthotic, this is the sensible first one to try. It is firm where it needs to be and cushioned on top, and it comes in full sizes, so there is no trimming.

Why it stands out

  • Polypropylene shell that is firm but flexible, so it supports the arch without feeling like a brick.
  • Deep heel cradle and dual-layer cushioning (foam over an EVA base).
  • PowerStep rates it for mild to moderate pronation; it fits widths up to 2E and is listed in the APMA Seal of Acceptance database.
ArchModerate (neutral)
SupportSemi-rigid polypropylene shell
LengthFull length, pre-sized
CushioningFoam over EVA base
FitsWalking, work and casual shoes with removable insoles

Good fit if

  • Your flat feet are flexible and ache after long days.
  • Your walking, work or casual shoes have a removable insole.
  • You want a pre-sized insole you will not have to trim.

Skip it if

  • No arch appears even on tiptoe (a rigid flat foot) — see a podiatrist first.
  • Your shoes are shallow or the insole does not come out — look at the Pinnacle 3/4.
  • Your ankles roll in a lot — the Pinnacle Maxx adds a posted heel.

PowerStep describes the standard Pinnacle as a neutral arch. If a moderate arch feels like too much under a very flat foot, the same shell comes as the PowerStep Pinnacle Low, which the brand designs for flat feet.

Superfeet All-Purpose Support Low Arch insole
Premium price range
Best Superfeet for flat feet#2

Superfeet All-Purpose Support Low Arch

Superfeet says there is no single insole for flat feet, but for everyday use it points flat-footed buyers to its Low Arch and cushioned models. This one is the thin, firm option that fits slimmer shoes, even some without removable insoles.

Why it stands out

  • Low arch height on a firm stabilizer cap over high-density foam.
  • Thin profile for moderate to tight shoes.
  • Trim-to-fit; listed in the APMA Seal of Acceptance database.
ArchLow
SupportFirm stabilizer cap over dense foam
LengthFull length, trim-to-fit
CushioningFirm, thin
FitsSlim everyday shoes, with or without removable insoles

Good fit if

  • Your shoes are slim, or their insole does not come out.
  • You like a firm, close feel underfoot and do not mind trimming to size.

Skip it if

  • You want plush cushioning — Superfeet rates it firm.
  • You want a deep heel cup — Superfeet calls this one “accommodating.”
  • Your boots have a waterproof (e.g. GORE-TEX) liner — Superfeet warns this model can damage it.
PowerStep Pinnacle Maxx insole
Premium price range
Best for overpronation#3

PowerStep Pinnacle Maxx

The Maxx keeps the Pinnacle arch shape but adds a firmer shell and an angled heel platform. PowerStep positions it for moderate to severe overpronation, which is common in flat feet.

Why it stands out

  • Firmer polypropylene shell with a 2° medial heel post (PowerStep’s figure).
  • Deep heel cradle and the same dual-layer cushioning as the Pinnacle.
  • Works in athletic, work and casual shoes with removable insoles, including work boots.
ArchModerate, posted heel
SupportFirmer shell, 2° medial heel post
LengthFull length, pre-sized
CushioningFoam over EVA base
FitsAthletic, work and casual shoes with removable insoles

Good fit if

  • Your arch drops noticeably and the inside edge of your shoes wears first.
  • A regular cushioned insole flattens out under you.
  • You stand or walk for long stretches in shoes with removable insoles.

Skip it if

  • Your flat foot is rigid, or you have numbness or neuropathy — get a professional assessment first.
  • Your symptoms are mild and this is your first orthotic — the standard Pinnacle is the gentler start.
PowerStep Pinnacle Low insole
Premium price range
Also worth a look

PowerStep Pinnacle Low

The Pinnacle Low uses the same semi-rigid shell and deep heel cradle as the Pinnacle with a lower, contoured arch. PowerStep describes it as made for flat feet and overpronation, so it suits people who find a standard-height arch presses too much.

Why it stands out

  • Low contoured arch on a firm-but-flexible polypropylene shell.
  • Deep heel cradle; foam top layer over an EVA base.
  • Pre-sized in full sizes, widths up to 2E.
ArchLow (made for flat feet)
SupportSemi-rigid polypropylene shell
LengthFull length, pre-sized
CushioningFoam over EVA base
FitsAthletic, work and casual shoes with removable insoles

Good fit if

  • A standard-height arch has felt like a lump under your flat arch.
  • You want PowerStep support in a shape the brand designs for flat feet.

Skip it if

  • Your shoes have no removable insole.
  • Your ankles roll in a lot — the Pinnacle Maxx adds a posted heel.
PowerStep Pinnacle 3/4 insole
Mid-range price range
Also worth a look

PowerStep Pinnacle 3/4

Dress shoes, flats and many casual shoes have no room for a full orthotic and no removable insole. The Pinnacle 3/4 is a slim, shorter version that sits on top of the existing insole and stops before the toes.

Why it stands out

  • Semi-rigid external shell in a 3/4 length with a tapered front edge.
  • Leaves the toe box uncrowded.
  • Non-slip heel pad keeps it in place.
ArchModerate (neutral)
SupportSemi-rigid external shell
Length3/4 length, pre-sized
CushioningSingle foam layer
FitsDress shoes, flats and shoes without removable insoles

Good fit if

  • You need arch support in dress shoes or flats whose insole does not come out.
  • Full-length insoles make your shoes too tight.

Skip it if

  • You need a deep heel cup — this version has a low, flat heel cradle.
  • Your shoes have room and a removable insole — the full Pinnacle covers more.
Superfeet All-Purpose Support Medium Arch (formerly Blue) insole
Premium price range
Also worth a look

Superfeet All-Purpose Support Medium Arch (formerly Blue)

The old “Blue” is now All-Purpose Support Medium Arch: the middle of Superfeet’s three heights, a little thinner than Green. It suits low-to-medium arches better than fully flat feet.

Why it stands out

  • Medium arch on Superfeet’s firm stabilizer cap.
  • Sculpted heel cup; mid thickness for moderate to snug shoes.
  • Trim-to-fit.
ArchMedium
SupportFirm stabilizer cap over dense foam
LengthFull length, trim-to-fit
CushioningFirm, mid thickness
FitsModerate to snug shoes

Good fit if

  • Your arch is low but not fully flat, and the Low Arch model feels like too little.
  • You want a Superfeet that fits mid-volume shoes.

Skip it if

  • Your arch is fully flat — Superfeet points flat feet to its Low Arch and cushioned models.
  • You want soft cushioning — it is firm.
Superfeet All-Purpose Support High Arch (formerly Green) insole
Premium price range
Also worth a look

Superfeet All-Purpose Support High Arch (formerly Green)

The classic “Green” is now called All-Purpose Support High Arch. It is Superfeet’s firmest, thickest everyday model, and Superfeet itself recommends it for high arches. Many people still buy it for flat feet out of habit; for most flat feet it is the wrong shape.

Why it stands out

  • Firm stabilizer cap over high-density foam with a sculpted heel cup.
  • Thickest Superfeet profile, best in roomy shoes and boots.
  • Trim-to-fit; listed in the APMA Seal of Acceptance database.
ArchHigh
SupportFirm stabilizer cap over dense foam
LengthFull length, trim-to-fit
CushioningFirm, thickest
FitsRoomy shoes and boots with removable insoles

Good fit if

  • Your arch is flexible but you need the firmest Superfeet shell, and a high arch does not press.
  • Your shoes or boots are roomy with a removable liner.

Skip it if

  • Your arches are low or very flat — Superfeet labels this model High Arch.
  • Your shoes are snug — it is the thickest model.
  • You want comfort straight away — expect a break-in period.

Still torn between the two?

Flexible flat feet in everyday shoes: PowerStep Pinnacle. Slim shoes or no removable insole: Superfeet Low Arch.

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Tips

Three things that make the difference

01

Learn the new Superfeet names

Superfeet renamed its line in 2023: Green is now All-Purpose Support High Arch, Blue is Medium Arch and Black is Low Arch. Old names still appear in listings and reviews.

02

Sizing works differently

Superfeet sizes span one and a half shoe sizes and are trimmed to fit; most PowerStep styles come in full sizes and fit without trimming.

03

Break-in differs too

Superfeet suggests about two weeks of gradual wear; PowerStep’s FAQ says one to two weeks. Firmer models take longer.

Honest note

Neither brand has a single “flat feet” insole that suits everyone. Superfeet says so directly, and PowerStep makes three Pinnacle variants for different arches. Choose by arch height, firmness and shoe volume, not by brand loyalty.

FAQ

Questions people ask

Is Superfeet or PowerStep better for flat feet?

For most flexible flat feet in everyday shoes, PowerStep’s Pinnacle family is the easier fit: moderate or low arch options, a posted model and full sizes. Superfeet’s Low Arch is better for slim shoes. Both brands have models listed in the APMA Seal of Acceptance database.

Is Superfeet Green good for flat feet?

Usually not. Superfeet now calls Green “All-Purpose Support High Arch” and recommends it for high arches. For flat feet, Superfeet points buyers to its Low Arch and cushioned models.

What is the difference between PowerStep Pinnacle and Pinnacle Maxx?

PowerStep says the Maxx has a firmer arch support and an angled 2° heel post for moderate to severe overpronation. The standard Pinnacle is rated for mild to moderate pronation.

What happened to Superfeet Black, Blue and Green?

Superfeet renamed them in 2023: Black became All-Purpose Support Low Arch, Blue became Medium Arch and Green became High Arch. The products are the same family; only the names changed.

Which lasts longer, Superfeet or PowerStep?

Superfeet says about 12 months or 500 miles. PowerStep says six months or longer with casual wear and offers a lifetime guarantee against breakage of the shell.

Can I trim PowerStep insoles like Superfeet?

Most PowerStep styles come in full sizes and fit without trimming. If you trim, PowerStep says take off no more than half an inch, using the shoe’s factory insole as a template.

Pick the shape, then the brand

Want the full picture? See all our best insoles for flat feet, compared by use, and the FAQ on fit, break-in and care.