Search  for anything...

Samurai Insoles Ninjas Plantar Fasciitis Relief Arch Support Shoe Insoles - Podiatrist Designed, Orthotic Lab Made in The USA

  • Based on 23,287 reviews
Condition: New
Checking for the best price...

Buy Now, Pay Later


As low as $8 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, May 14
Order within 1 hour and 42 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Color: Purple


Size: M9-9.5 or W11-11.5


Department ‏ : ‎ unisex-adult


Date First Available ‏ : ‎ October 18, 2017


Manufacturer ‏ : ‎ Samurai Insoles


Best Sellers Rank: #7,218 in Health & Household (See Top 100 in Health & Household) #37 in Shoe Insoles


#37 in Shoe Insoles:


Customer Reviews: 3.8 3.8 out of 5 stars (23,958)


Product Benefits: Bunion Discomfort, Flat Feet, Foot Pain, Heel Pain, Plantar Fasciitis, Shin Splint


Target Use Body Part: Ball of Foot, Foot, Heel


Other Special Features of the Product: Arch Support, Durable, Lightweight, Pain Relief, Waterproof


Insole Type: Arch Support Insole


Arch Type: Medium Arch


Unit Count: 1.00 Count


Number of Items: 1


Size: M9-9.5 or W11-11.5


Item Dimensions: 6.69 x 2.36 x 0.79 inches


Shoe Width: M Centimeters


Brand Name: Samurai Insoles


Model Name: Ninjas


UPC: 851832006230


Item Nype Name: Ninjas Plantar Fasciitis Arch Support Orthotic Shoe Insoles


Manufacturer: Samurai Insoles


Color: Purple


Item Form: Arch Support Insole


Material Type: Polypropylene


Recommended Uses For Product: Boot, Cleat, Shoe, Slipper, Sneaker


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Transformative and healing
Color: Purple Size: M13-13.5 or W15-15.5
I've been dealing with plantar fasciitis for about 8 months now and have tried many different kinds of insoles as well as physical therapy. I've discovered that the problem with traditional insoles is that they negatively offset the gains you get in arch support by providing way too much heel padding, so they either don't help, or they don't help for very long. These samurai insoles are perfect. They provide rigid arch support without heel padding, they're easy to install, they stay in place, and most importantly, they've helped more than anything else I've tried. (PT was a huge waste of money, by the way.) They're a little pricey, but completely worth it, especially considering how much more money I've wasted on over-the-counter insoles. These samurai insoles feel like they're retraining the way I walk, so that I'm not over-pronating and putting too much stress on the fascia, especially under my arch. For the first time in many, many months I have hope that someday I will be able to run again. I did find that they squeaked a bit after walking with them in my Brooks. The instructions suggested that I try a small piece of clear tape around the front corners to reduce friction, and all of the squeaking has gone away. Seriously, if you're suffering from PF, and you're frustrated with all the other products out there, try these. They will change your life. ... show more
Reviewed in the United States on December 29, 2025 by maximus

  • Review of many 3/4 length inserts for comfort and improvement over time.
Color: Purple Size: M10-10.5 or W12-12.5
I have a lot of pain in my heel in the left foot. I desperately bought seven different pairs of shoe inserts on Amazon in an attempt to help decrease pain and heal the problem. Some pairs were very intrusive making walking nearly impossible. Other pairs were better. I am listing them in order from most uncomfortable the most comfortable and supportive. PCSsole 3/4 Orthotics, 330+ lbs Plantar Fasciitis 3/4 Length Insoles, Plantar Fasciitis 3/4 Length Insoles High Arch Supports Orthotic Insoles, Plantar Fasciitis Orthotic Shoe Insoles, QBK High Arch, Dr. Foot 3/4 Orthotics Shoe Insoles and Dr. Potter 3/4 Orthotic Insoles. I bought the 3/4 length instead of full length so I would still have plenty of space in my shoe for my toes to move around. I liked the Dr. Foot and the Dr. Potter inserts the most even though it took time to get used too. What I had trouble with in all the inserts there is a tendency for the shoe to tip when making left or right turning movements. I like to run trail trails and that would increase my chances of rolling a foot laterally causing me to fall and/or sprain an ankle. So I went back to Amazon and research more orthodontics. I came across Samurai Insoles Ninjas Plantar Fasciitis Relief Arch Support Shoe Insoles. They were purple and looked funny in the picture. I did not purchase these before because they looked flimsy to me. I bought them out of desperation. They actually slide in under your removable shoe padding (unlike the others I bought that went on top of the padding). I slid my foot into the shoe thinking this is just going to be a stupid idea, but it was far more comfortable than any of the other inserts I tried. The insert going under the foot padding actually made my foot more stable than the other inserts did. That was a plus! Then I noticed my foot did not hurt as much when I put weight on my heel. That was also a plus, but then I became concerned that it only felt better because I was not changing the pressure on my foot in a way that was going to give me the "correct" support I needed and I would in the long term just run into more problems (pun not intended). I decided to give the inserts a test. I went for a short walk and my heel was l little tender, but still much better than having no insert at all. I decided to mow my lawn. A small lawn that only took about 20 minutes. My foot actually felt better after mowing the lawn than it did before I started. Go figure? With the other inserts I would have had to sit and rest with my foot up for about an hour. Anyway, I have worn the inserts for a few days. My foot is slowly getting less and less painful. This was a relief in itself as I have had this pain in my foot for over 7 months with no sign of getting better. Hopefully, my foot well get better and I will be able to running the trails again. Right now these inserts are my best option. For that I give them 5 stars! ... show more
Reviewed in the United States on May 29, 2025 by Nod

  • They made a difference for me!!!
Color: Purple Size: M8-8.5 or W10-10.5
Recently had total knee replacement and, following that, I was diagnosed with sciatica. These weren't perfect to solve my health issues, but certainly made a difference in my ability to get up and move. I could get through small walks with less pain and they certainly seemed very sturdy. My only wish was that they might not be quite so rigid. They do give good arch support and fit well in most of my shoes. Also, they are very easy to clean. ... show more
Reviewed in the United States on January 8, 2026 by Baxter's Mom

  • Perfect for plantar faciitis
Color: Purple Size: M6-6.5 or W8-8.5
I have been suffering with my 2nd bout of plantar fasciitis and have tried every insole made, including the horrifically expensive Good Feet insoles with no relief. All insoles, even the power step ones that have been my tried-and-true product x 15 years have me in pain. Out of frustration and pain purchased these Ninja arch support soles, which actually go under the existing manufacturer's shoe insole, and after one day, almost no pain!!! I know after trying everything that each individual may have a different experience, but these are definitely worth a try if you are suffering with fasciitis as well. ... show more
Reviewed in the United States on January 8, 2026 by Sharon

  • Great product
Color: Purple Size: M9-9.5 or W11-11.5
My wife and I are both having considerably less plantar pain after using these.
Reviewed in the United States on January 6, 2026 by Cameron Grant

  • Overpriced.
Color: Purple Size: M6-6.5 or W8-8.5
I could not fit these under my Sketchers insoles because they were glued in tight. I have a second pair of Sketchers and those I could pull out so the Ninja soles fit. I bought $8.00 generic foam insoles, waiting for the Ninjas to arrive. Honestly, I don't feel the difference. I think these plastic insoles are grossly overpriced. And my super painful Plantar Fachitis is still present. ... show more
Reviewed in the United States on September 11, 2025 by L. W.

  • Not helpful for painful heels. Too hard!
Color: Purple Size: M7-7.5 or W9-9.5
The ad said lifetime guarantee. Received them on October 11th, followed all the instructions and installed them as the directions said and it’s been a month and I have had no relief. When I went to the doctor, he said they are way too hard and sent me to a shoe store to get different ones. I cannot find out how to return these? Just way too hard for already painful heels!!. ... show more
Reviewed in the United States on November 20, 2025 by Carrottop

  • Retired
Color: Purple Size: M15-15.5 or W17-17.5
They work great for heel pain. I have size 15 5x wide flat feet. I’ve had heel pain off and on for months. I stared wearing the Samurai insoles and within days started to feel the pain subside. Within three weeks I had no heel pain at all. Now I have them in all my shoes and would recommend them to anyone with feet pain to try them. ... show more
Reviewed in the United States on December 29, 2025 by Stephen Siegel

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...