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Samurai Insoles

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

  • Based on 24,256 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 22
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Color: Purple


Size: Mens 4-4.5/Womens 6-6.5


Description

Just Say "No" to Cheap Foam Insoles Forget cushiony gimmicks - Ninjas orthotic arch support shoe inserts provide the solid, springy support that tackles common types of foot issues at their core. Ninjas are crafted from an ultra-durable, yet incredibly springy, polypropylene polymer for unmatched comfort and longevity. Avoid the usual pitfalls of cheap foams or gels - no wear and tear, no funky smells, and no soggy sweaty insoles. Ninjas are podiatrist developed and crafted in an orthotic laboratory right here in the USA. Forget those vague, one-size-fits-all ranges. We offer THIRTEEN PRECISION SIZES, so your feet get the perfect fit they deserve. Simply select your Samurai Insoles Ninjas size based on the size of shoe you will be wearing them in. Samurai Insoles Ninjas are the perfect choice for medium-fitting footwear with a removable insole like running shoes, casual sneakers, roomy dress shoes, basketball shoes, pickleball shoes, medium fitting boots and more. Are Samurai Insoles Ninjas a cushion? Are they soft and squishy? No. Samurai Insoles Ninjas are plastic arch supports with no foam or cushioning present. They must be placed underneath a shoes already present insole to be effective and comfortable. Are Samurai Insoles Ninjas a full length insole? No. Samurai Insoles Ninjas are 3/4 length, not a full length insole. They are designed to comfortably support the arch of the foot and not extend beyond the ball of the foot. Are Samurai Insoles Ninjas compatible with all shoes? No. Samurai Insoles Ninjas are only compatible with a shoe with a removable factory insole. My Samurai Insoles Ninjas seem small and/or narrow, is that correct? Samurai Insoles Ninjas are designed to comfortably support the arch of the foot. Despite appearing narrow for some, Ninjas are designed to provide comfortable arch support when placed under the shoe's removable insoles. I did not have immediate relief from wearing Samurai Insoles Ninjas, did I do it wrong? Your feet may need some time to get used to the support of Ninjas for maximum comfort. Start with wearing them an hour/day, and work your way up from there! For safety, we must recommend discontinuing use of Ninjas if pain is increased during use.

Department ‏ : ‎ unisex-adult


Date First Available ‏ : ‎ October 18, 2017


Manufacturer ‏ : ‎ Samurai Insoles


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #7,078 in Health & Household (See Top 100 in Health & Household) #31 in Shoe Insoles


#31 in Shoe Insoles:


Customer Reviews: 3.8 3.8 out of 5 stars (24,256)


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


Corrective Support: True


Unit Count: 1 Count


Number of Items: 1


Size: Mens 4-4.5/Womens 6-6.5


Item Dimensions: 6.69 x 2.36 x 0.79 inches


Shoe Width: M centimeters


Brand Name: Samurai Insoles


Model Name: Samurai Insoles Ninjas


UPC: 851832006186


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: Tuesday, Sep 22

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.

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Similar Products

Top Amazon Reviews

    • Review of many 3/4 length inserts for comfort and improvement over time.
Color: Purple Size: Mens 10-10.5/Womens 12-12.5
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
    • Very successful with great releif!
Color: Purple Size: Mens 9-9.5/Womens 11-11.5
I’ve had planter fasciitis for several years. I had a cortisone shot in the foot, which helped a lot, and the pain never did come back. This passed Christmas I got an exercise ski machine, the movement of side to side side to side side to side. My arch fell within minutes and I’ve been in severe planter fasciitis pain ever since. While the constant rotation of different braces to help this issue, helped a tiny bit, those braces only masked the pain. Last week, I got these cute little purple inserts and my life has never been better!! Haven’t had to wear a brace. My whole foot has a lot more strength with much less pain. I’m so thankful I’ve found this product to finally help heal this problem and pain. ... show more
Reviewed in the United States on June 22, 2026 by Amazon Customer
    • Great comfort for planter fasciitis relief and leg pain I’d recommend to anyone
Color: Purple Size: Mens 8-8.5/Womens 10-10.5
I have bought two pairs now they work amazingly. I suffer from planter fasciitis and I have a heel spur. When my feet are not supported I get leg pains. These solved all those problems and I have referred many people to them. My only issue is they squeak when you walk. Another customer stated the same thing they suggested to sand them down to roughen the smoothness up. So maybe I will try that. ... show more
Reviewed in the United States on April 18, 2026 by Lindsey
    • Works well
Color: Purple Size: Mens 9-9.5/Womens 11-11.5
Today is the first day that I have put the insoles in my shoes. But I can already feel the difference. I have Plantar Fasciitis and walking can be painful getting up in the morning or after sitting for some time. So far my foot is not hurting after putting these in my shoes. Shipping was fast and the item is well made. It is a solid hard plastic but you don't feel it in your shoes because it is placed under the original soles of your shoes. It really supports the arches, allowing your foot to be more stable without turning inward. I am very pleased with this item. They are costly, but they are worth buying if you suffer from Plantar Fascitis. Also, if you have an OTC card these may be covered. ... show more
Reviewed in the United States on February 2, 2026 by Marie NYC
    • Healing and Happy
Color: Purple Size: Mens 8-8.5/Womens 10-10.5
This product didn't work immediately, but I have had these insoles in my shoes for the past week and I can now feel a difference. They have made the crippling morning pain so much less. I can tell that they are healing my body. They have also helped with my knee and hips pains. These insoles were money well spent. My only wish is that they came with better instructions of how to install in the shoe or possibly images of how it should fit on your foot. Thank you Samurai Insoles. ... show more
Reviewed in the United States on July 3, 2026 by WH
    • Didn't work for me; sports med doctor recommends cushioning and arch support vs a hard insert
Color: Purple Size: Mens 11-11.5/Womens 13-13.5
I bought these hoping for a quick cure. When my sudden onset PF got worse I made an appointment with a sports med doctor who deals with a lot of plantar fasciitis. He tells me I need cushioning, not a hard insert for PF. That seems to be what he recommends for all his patients. It turns out I also have high arches so I need an insert with high arch support. I ordered PowerStep high arch versions, which I didn't even know existed, but available here on Amazon. This is not a criticism of the product per se, which seems well made, it is just not good for me. Since it is just a half-foot insert it does not improve arch support. My advice would be to ask a sports med doctor before you order. ... show more
Reviewed in the United States on September 13, 2025 by Bruce Boyes
    • YES, they squeak. YES, they're too expensive. NO, they haven't helped(yet).
Color: Purple Size: Mens 10-10.5/Womens 12-12.5
Maybe I shouldn't give them such a low rating. I don't think I've ever rated anything on Amazon this low. BUT, these things are nothing but pieces of curvy plastic. NO WAY are they worth $35. If the price was somewhere around $10 I wouldn't be so disappointed. The arch isn't high enough for me. They're not uncomfortable, nor are they comfortable. Not quite sure if they're helping my Plantar Fasciitis at all. It's only been a week. I'm not sure they stay where they are supposed to under my foot. I am sure they make a lot of noise when I walk or shift my weight. I am looking into full insoles that seem to be more substantial for around the same price or cheaper. These feel like a gimmick to me. I see no reason to buy a 3/4 insert like these rather than a full insole. I don't know WHAT I was thinking when I put these in my cart and paid for them. I will keep them in my work shoes until I find something better or these flatten out. I will update my review if by some miracle these end up surprising me. For now I will keep looking for something that looks like it's worth the money. ... show more
Reviewed in the United States on January 14, 2026 by J.D.
    • Cured my Plantar Pain
Color: Purple Size: Mens 6-6.5/Womens 8-8.5
About two weeks ago, I woke up with a horrific plantar fascitis pain the minute my heels touched the floor. I was in the worst pain and nothing seemed to help. I found an online post written by a podiatrist that explained the pain caused by plantar and how best to deal with it. The article recommended these insoles that I probably would not have chosen on my own. The price seems steep for the product and some people argue that "it's just a piece of plastic" which it seems to be when you open the package. Because I wasn't sure, I also purchased the product with better Amazon reviews and that one does not compare to the Ninja! I encourage you to try the product. My plantar is almost completely gone and the product is so great that I bought it for my wife and will buy it for my parents as well. I continue to use them under my sneaker insoles and they are just amazing the way they provide support while not losing the comfort of your own sneakers. I highly recommend this product to anyone suffering from Plantar or similar heel and foot arch pain. That little piece of plastic is the best darn piece of plastic you'll find. It's thick, durable, and curves in all the right places! Definitely get this awesome product! ... show more
Reviewed in the United States on February 23, 2026 by Cristin Revilla

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