
Size Guide Light
| Size | US Men | US WomenAU Women | UKAU Men | EUR |
|---|---|---|---|---|
| S | 5 – 7.5 | 7 – 8.5 | 2.5 – 6.5 | 35 – 40 |
| M | 8 – 11.5 | 9 – 11 | 7 – 11 | 41 – 45 |
| L | 12 – 14 | 11.5 – 14 | 11.5 – 13 | 46 – 48 |
*Trim-to-fit — every pair can be trimmed down to your exact shoe size.
Size Comparison

What People Say About Light Arch Support
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Life Saver!! (Foot saver)
Had the beginnings of Plantar Fasciitis in both heels and shooting pains up the back of my ankles, I do a lot of walking (about 9km per day)! I am in my 60's so my arches have fallen slightly as well. The curvature in the insole wasn't as dramatic as I expected so I didn't think they would work, I was totally wrong! Within about 4 days I realised that the pain had completely stopped! Amazing and thank you! I shall be ordering more! I am 5'2" and 120lbs, I didn't feel I needed the extreme ones so bought the mid range, which are perfect for me.
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OrthoFlexx Lite inserts are the best
The OrthoFlexx Max inserts were a little much and wobbly. I felt afraid of losing my balance. I wanted to return them, but OrthoFlexx proposed a different solution. They sent me a pair of Lite inserts to try and keep both if I wanted. So far, so good. The Lite inserts are great! I'm happy with them.
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Finally!! A Painless Day at Work!!!
Immediate relief as soon as I popped out the old orthotics and replaced with the OrthoFlexx inserts. The light arch support insert filled in the needed arch on my casual loafers which went to work immediately. The heavy arch supports slid right into my six inch work boot and changed the day to day experience which had been very tired, painful feet after a long day working construction job sites. As long as I'm comfortable on my feet, standing or hoofing around, the whole day goes a lot smoother.
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Could not wear them with high arch…
Could not wear them with high arch support so they sent me new ones with the lower arch and I love them. They are really comfortable and help a lot.
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My son who is 11 has complete flat foot…
My son who is 11 has complete flat foot and suffers Overpronation. Which was slowing him down with sports. I ordered 3 sets, the mid arch support was perfect for him and comfortable. I asked to exchange the 2 other packs of high support and the customer service team were more than helpful sending me 2 new packs of mid support immediately. Definitely give this company 5 stars for customer service and so far the most comfortable insoles we have purchased. Thank you.
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Insoles that I can absolutely use for work
The online order process is quick and easy, got mine in no time. I ordered the low arch insoles and the size I got is medium (8-11.5). I made a single adjustment and started to use it for work. I like it.
Frequently Asked Questions
Before you order
Will they help my feet?
Light is built for tired, aching feet, mild heel pain and shoes with no support inside.
It gives a gentle lift, not a correction. For flat feet, plantar fasciitis, bunions or high arches, Max is the firmer one.
Not sure? Take the 60-second insole quiz.
Light or Max?
Light: 1.1" arch, softer, for comfort and mild support.
Max: 1.38" arch, firm, for feet that need holding up all day.
Tried firm arch support and found it too high or too rigid? Light.
Will they fit my shoes?
Yes. They work in most sneakers, walking shoes, loafers, work shoes and boots.
Remove the flat insert your shoe came with and trim the toe if needed.
Trimmed insoles are still covered by the guarantee.
How do I choose the right size?
Choose your usual shoe size. Sizes S, M and L each cover a range.
Between sizes? Go up one and trim the front.
Still unsure? Email support@orthoflexx.com with your shoe brand and size.
Do I have to trim the insoles?
Usually yes, a little at the toe.
Shoe sizes vary between brands, so each insole size covers a range. Use your current insole as a guide and trim along its outline.
Trim less than you think you need, then test the fit. You can always cut a bit more, never less.
Only trim the toe. Trimmed insoles are still covered by the 30-day money-back guarantee.
If I trim the insoles, can I still return them?
Yes. Trimming does not affect the 30-day money-back guarantee.
Email support@orthoflexx.com with your order number within 30 days, and we'll refund you.
Do they work for wide feet?
Light comes in a standard width, not a wide fit.
If they feel too narrow after a few days, the 30-day money-back guarantee covers you.
The first few weeks
Is there a break-in period?
Barely. The arch is gentle, so most people are comfortable within a day or two.
Many feel the difference on the first wear.
What if they hurt after a few days?
Some feet simply don't adapt to an insole. If it doesn't settle, email us.
We'll suggest a better fit from our range or issue a refund. You have 30 days.
Can I move them between different shoes?
Yes. Many customers switch them between loafers, sneakers and work shoes.
A lot of people end up buying a set for each of their most-used pairs so they never have to swap.
Shipping, guarantee and payment
Where do you ship from?
US orders ship from our US warehouse, so delivery is fast.
International orders ship from the warehouse closest to you.
How long does shipping take?
Orders are dispatched within 24 business hours with full tracking.
Most US, UK, CA and AU customers receive their package within 3 to 10 days.
Shipping is free on every order.
What if they don't help my feet?
30-day money-back guarantee.
Email support@orthoflexx.com with your order number, and we'll refund you.
Can I pay with my HSA or FSA card?
Yes. HSA and FSA cards are accepted at checkout.
Care and durability
How long do they last?
Lifespan varies with weight, shoes and hours on your feet.
Replace them when the arch starts to flatten or the top cover wears through.
How do I clean them?
Wipe with a damp cloth and mild soap, then air dry away from direct heat.
Don't soak or machine-wash them, as that can affect the supportive structure.
Foot Pain Relief or Your Money Back
No real relief within 30 days? Email us for a full refund, no questions asked. Wear them, trim them, put them through your longest day.
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