full-length insolespinaflow
- your own shoes
- yes
- support
- the whole foot
- switch pairs
- yes, you move it over
- budget
- €29,99 per pair
- the catch
- most discreet in a high-top shoe
height insoles
look taller.keep your style.
an instant, subtle height boost.
Designed for comfort and compatible everyday shoes. Soft memory foam, easy to fit. Up to 3.5 cm at the heel.
- secure payment
- 14 days to change your mind
- tracked shipping
- sits inside your shoe, best in boots, chelsea boots and high-tops
- soft memory foam, ventilation holes
- full length, trim to your size
specs
- heel thickness
- up to 3.5 cm, as stated by the manufacturer
- gain when worn
- in our own test (one person, same shoes): 189 cm without, 193 cm with. Your result depends on your shoes and your foot.
- material
- EVA memory foam
- format
- full length, trim to fit
- colour
- white
- in the box
- 1 pair
- made in
- China
shipping and returns
Delivery time: 7 to 13 days. You get a tracking number as soon as it ships.
You have 14 days after delivery to change your mind, no reason needed. Return shipping is on you, and you're refunded within 14 days of us receiving the return. Return policy
why up to 3.5 cm
not the tallest boost.the one you'll actually wear.
More height isn't always better. As an insole gets taller, it can get harder to hide, to keep in place and to wear every day. Up to 3.5 cm is a moderate lift, designed to stay usable in shoes that still feel like yours.
comfortable
Soft memory foam that moulds to your foot. We've worn them ourselves and found them comfortable and easy to fit.
discreet
It sits inside the shoe. Best in boots, chelsea boots and high-tops.
a reasonable height
Up to 3.5 cm thick, meant to be worn regularly. Our own test, same shoes: 189 cm without, 193 cm with.
If you want the biggest possible lift, this isn't the one. If you want a balance of height, comfort and discretion, that's what it's designed for.
how it compares to other ways to add height
Each has its upside. Here's what sets them apart, no spin.
heel lift
- your own shoes
- yes
- support
- the heel only
- switch pairs
- yes
- budget
- depends on the model
- the catch
- only supports the back of the foot
elevator shoes
- your own shoes
- no, you need that specific pair
- support
- the whole foot
- switch pairs
- no
- budget
- the price of a pair of shoes
- the catch
- you're limited to the brand's models
swipe to compare →
made for everyday shoes
discreet, if the shoe plays along.
The insole sits inside, under your foot: from the outside, people only see your shoe. The higher the shoe, the better it hides the extra height.
- boots, chelsea boots, high-top sneakersideal for 3.5 cm
- low-top sneakers, dress shoespossible, but the raised heel can show in a low shoe
- loafers, very open shoesnot recommended: the raised heel may show
illustration: the insole in a high-top. In a low shoe the raised heel can show.
High-top shoes are what the manufacturer recommends. For the rest, it's our advice. Not every shoe is compatible: try the insole in yours before trimming.
how it works
three steps.
- 01
pick your shoes
The 3.5 cm insole works best in boots, chelsea boots and high-top sneakers: that's where it hides best.
- 02
try it, then trim
Slip it into your shoe first to check. Then lay your original insole on top, trace the outline and cut with scissors.
- 03
slide it in
Take out the original insole if it comes out: your foot keeps its room and stays better held.
comfort and care
memory foam
The EVA foam moulds to the shape of your foot.
breathable
Ventilation holes let air move inside the shoe.
full length
It fills the whole shoe, which helps it stay in place.
washable
Reusable. Hand wash, then let it air-dry.
Like any height insole, give yourself a few days to get used to it: start with a few hours. If you have foot pain or a foot condition, check with a health professional first.
what we share on @spina.flow
the list.
A few centimeters won't change who you are. The details change how you present yourself. The insole is one box on the list: the one that works the moment you put it on.
- training
- 8h+ sleep
- 3L water
- circadian rhythm
- natural food
- 10k steps
- fitted clothes
- good haircut
- eye contact
- spinaflow insoles(you are here)
what you get
no tricks.
A small independent brand: straight answers before you buy, and a real person after.
what you get
- a real person answering your emails
- straight answers before you buy, this page included
- 14 days to change your mind
- tracked shipping
what we don't do
- fake reviews
- fake countdown timers
- fake stock shortages
- fake crossed-out prices
No reviews on this page yet: they'll show up when real customers leave them.
before you order
questions.
How many centimetres do I really gain?
The insole is up to 3.5 cm thick at the heel, as stated by the manufacturer. In our own test, one person wearing the same pair of shoes went from 189 cm without the insoles to 193 cm with them. That is one person and one pair of shoes: your result depends on your shoes and on how your foot sits in them.
Why only up to 3.5 cm?
Because a moderate lift can be easier to hide and easier to wear regularly. A thicker insole sits at a steeper angle, which can make it more visible and harder to keep in place in everyday shoes. If maximum height is your priority, this isn't the insole for you.
Can't I find it cheaper somewhere else?
Probably, yes. It's made in China, like the vast majority of insoles of this kind, including the pricier ones. What you get here: straight answers before you buy, a real person answering your emails, tracked shipping and 14 days to change your mind.
Can people tell?
The insole is inside the shoe, so nobody sees it. What can show is a heel rising out of a shoe that's too low. With boots or high-tops, nothing shows. With low-cut shoes, the heel can show.
Which shoes is it for?
The 3.5 cm thickness is a real lift: it works best in boots, chelsea boots and high-top sneakers. In a low-cut shoe the heel can rise out of the shoe, so try it on first.
How do I fit it to my shoe size?
Trim it with scissors: lay your original insole on top, trace the outline and cut. Try it before cutting.
Is it comfortable? Does it stay in place?
We found them comfortable and easy to fit, though every foot is different. Memory foam, ventilation holes and a full-length shape that helps it stay in place. Allow a few days to adjust, starting with a few hours a day. If you have foot pain or a foot condition, check with a health professional first.
Can I move it from one shoe to another?
Yes, as long as the shoes are the same size. Day to day, one pair of insoles per pair of shoes is easier.
How do I clean it?
It's washable and reusable. Hand wash it, then let it air-dry somewhere ventilated.
How long does shipping take?
Delivery usually takes 7 to 13 days. You get a tracking number as soon as it ships. Either way, delivery never takes more than 30 days, as set out in our terms of sale.
What if it doesn't work for me?
You have 14 days after delivery to change your mind, no reason needed. Return shipping is on you and the refund comes within 14 days of us receiving the return. Try it on before trimming: we only accept returns of insoles that are neither trimmed nor worn. Full details in the return policy.
Who's behind spinaflow?
An independent brand based in Toulouse, France, sharing habits to show up better on TikTok (@spina.flow). All legal info is in the legal notice, and you can reach us from the contact page.
look taller.
keep your style.
Up to 3.5 cm in compatible everyday shoes. €29,99 per pair, tracked shipping, 14 days to change your mind.
get my insoles @spina.flow