What Custom Fit Insoles With Arch Support Actually Are
The arch on this pair is a shell printed from that foot's scan. A store arch pad is a ready-made shape. The outline of the insole is still a length you choose.
Custom fit insoles with arch support, in this shop, means one specific thing. The arch is a shell printed from a scan of that foot, after you pay. It is not a foam lump glued into a size you picked off a rack. The rest of this page is the difference: what the printed arch is, what an ordinary arch pad is, and which choices are still yours.
The arch is a printed shell
Turn a finished pair over. Under the foam you will see a nylon piece with a fine layered texture. That piece is the arch shell. It is printed in PA12 on HP Multi Jet Fusion machines, from the scan of one foot. The left foot gets its own file. The right foot gets its own file. We do not average the two scans and flip a copy.
Your foot does not stand on bare nylon. A foam layer and a fabric cover sit above the shell. A separate cushion sits under the heel. The shell's job is to hold an arch shape for that foot. The foam's job is the give under your step. If you want the layer-by-layer version, read what the printed arch shell does and what the foam top does. This page stays on the comparison.

The outline around that shell is not a custom shoe last. It is a standard length, Full Length or 3/4 Length, so the pair can sit in shoes. The arch is the part that changes with the scan. Both lengths are $69.99, and the product page shows $99.99 crossed out. The how it works page is the order of scan, print, and delivery.
An ordinary arch pad is a shape already made
A store arch pad is built before anyone knows your feet. It might be a foam wedge, a firmer plastic hump, or a gel piece under the midfoot. You buy it in a shoe size, or in a small, medium, or large. Some packs let you pick a low, medium, or high arch. That choice is a bin in a warehouse. It is not a measurement of the foot that will stand on it.
Left and right are usually the same shape, or mirror images of one mold. If your two feet differ, the pad does not know. AAOS notes that the two feet are often not the same size, and that feet can swell through the day. A size on a box cannot follow that. A scan of each foot can, which is why the shell waits for photos.
The pad is also the thing that packs down. Foam is soft, and soft is what flattens. A printed shell is there so the arch shape is not the same piece of foam that cushions the step. That split is a build choice. It is not a promise about how your day will feel.
Where the two products part ways
| Store arch pad | Scan-printed arch | |
|---|---|---|
| Where the shape comes from | A size, or a low / medium / high bin | A scan of that foot, after you pay |
| Left and right | Usually one mold, or a mirror | Two prints, from two scans |
| What you pick on the page | Often a shoe size and a height | A US shoe size, a length, and a design. No arch menu |
| What your foot touches | Often the pad itself | Foam and fabric. The shell is underneath |
| When it exists | It is already on a shelf | Nothing is printed until the scan matches the order |
You can see every design in the 16 insoles. Lagoon is one blue cover. Obsidian is solid black. The fabric changes. The idea of the shell does not. Picking a color does not pick an arch height.
What "custom fit" does not mean
Custom fit, here, is the arch. It is not a custom outline, and it is not a shoe built around a cast of your foot. The toe end of a Full Length pair follows a standard shoe shape, which is why some shoes need a light trim at the toe. The size chart on the size guide is there so you can compare. It is not an order field. There is no dropdown for a US, UK, or EU size.
There is also no control that says "more arch" or "less arch." People ask for that because store pads are sold that way. On this pair the scan sets the shell. If you want a different length for a different shoe, that is a second pair, not a slider on the first one.
The shell is firmer under the arch, where the shape has to stay. The step lands on foam and on the heel cushion, where you want give. That is the point of printing a shell and then adding soft layers. It does not mean the pair changes your foot, and it does not replace a visit you already know you need.
What you still choose: length, then a cover
Length is about the shoes, not about a taller or shorter arch.
- Full Length runs heel to toe. It replaces the insole the shoe came with. It is the length for work boots, athletic shoes, and walking shoes when that insole lifts out and the toe box has room.
- 3/4 Length stops just behind the ball of the foot. It sits on top of the shoe's own insole. It is the length for dress shoes, flats, and shoes that are tight through the toes.
Both lengths get an arch from the same kind of scan, and both cost $69.99. The length guide goes shoe by shoe. If you only want the boots-and-sneakers case, the Full Length page for work boots and athletic shoes stays on those shoes.
The cover is the second choice. Sixteen designs share the stack. A loud print and a black cover are the same shell idea. Order the one you want to see when the shoe comes off.
The scan happens after you pay
On the product page, the step that asks for an email only stores the address. It does not open the camera. You pay $69.99 first. The scan is included in that price. After checkout, use the same email on complete your scan. Volumental records each foot: you wear white socks, stand by a sheet of plain paper, and take one photo of each foot. We do not send you to a scan website to browse. The link that matters is the one tied to the order email.
Until both photos are in, there is no shell to print. A shoe size is not a substitute, and we do not print one foot "to start." US orders are delivered within 14 days once the pair is being made from a finished scan. If you wait a week to take the photos, the making starts a week later. The longer note is why the insoles wait for your scan.
What you should notice, and what you should not cut
On the first day the arch is usually the new sensation, because many store insoles are low through the midfoot. The shoe can feel fuller. That is the stack taking space. Give it ordinary days in the shoes you actually wear before you decide the length was wrong. The first week page is that wearing note.
Trim only the toe of a Full Length pair, a little at a time, if the edge bunches. Use the insole you removed as a pattern. Do not cut the shell, and do not sand the arch to make it lower. A cut shell is a damaged pair. 3/4 Length rarely needs a toe trim, because it never reaches the toes.
Do not put a store arch pad on top of the printed shell. You would be stacking two arches, and the shoe will not have the room. Do not swap left and right. The higher-looking side is often just the other foot's scan.
When a store pad is the simpler object
A ready-made pad is a reasonable buy when you want a little cushion this afternoon, you are happy with one shape in your size, and you do not want to wait for a scan. That is a shopping choice about speed and simplicity. It does not describe the printed shell, and it does not say anything about what a foot "should" do.
A scan-printed shell is the pair to order when the thing you want is an arch that follows each foot, in a length that matches the shoes you wear, at $69.99, made after the photos are in. If a foot needs a clinician, go there. This is a comfort insole. We do not take HSA or FSA. If the pair arrives cracked, split, or clearly unfinished, email support@customsole.shop with the order number. A pair that arrives damaged or made wrong is replaced.
Frequently asked questions
Is the arch support the foam on top?
No. The arch shape is the printed shell under the foam. The foam and the fabric are what your foot touches. They cushion the step. They are not a height you picked from a menu.
Can I choose a low, medium, or high arch?
There is no arch menu. You do choose a US shoe size. The scan does not recommend one. After you pay, each shell is printed from that foot's scan.
Are the left and right arches the same?
Only if your scans are the same. Each shell is its own print. Do not swap them between shoes.
Does the design change the arch?
No. The 16 designs change the fabric cover. Lagoon, Obsidian, and the rest use the same idea of shell, foam, and heel cup. The shape still comes from your scan.
Do I scan before I pay?
No. You pay $69.99 first. Then you scan with the same email on the complete-your-scan page. Nothing is printed until that scan is matched to the order.
Sources
- Shoes: Finding the Right Fit, AAOS OrthoInfo
- Multi Jet Fusion technology, HP
CustomSole insoles are a comfort product, not a medical device. This article is general information, not medical advice. If you have ongoing foot pain, see a podiatrist.