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Style #: FW-K6000
4.8 out of 5 based on 65 customer ratings
(65 customer reviews)


When it comes to boots – nothing compares to the Prime.  This premium boot is a light weight, yet extremely tough, allowing your feet to stomp through rubble, rocks and concrete – with ease.


More Information

Product Description


The Prime may be our most highly rated style in terms of overall fit and comfort.  The Prime features exceptionally soft full grain leather that contours beautifully to the shape of your foot.  Inside the Prime you will find very few seams along with a full moisture wicking lining which cradles your foot in complete comfort.  Speed lacing and rear finger loop allows your to lace up and remove the Prime with ease.    You will never need to “break in” the Prime, as it fits like a glove from day one.



  1. Soft yet tough full grain leather with minimal seams
  2. Speed lacing on top, steel eyelets below
  3. Padded collar and lined tongue, forefoot and heel
  4. Replaceable enclosed spring is factory loaded
  5. Forefoot EVA cushioning
  6. Built-in Z-Orthotic® extends from the ball of the foot to heel
  7. Long life off-road outsole tread
  8. Wide toe box
  9. Felt lined replaceable 7mm insole
  10. Made in Korea


Replacement Parts:

The 1.0 enclosed heel (RO) is embedded with mesh for exceptional durability and life. Order Here.  Item# FP-KEC012.

65 reviews for Prime

  1. 5 out of 5

    (verified owner):

    Wear Z-coil 360 days a year on occasion something like a wedding or funeral MIGHT dictate alternate foot wear.

  2. 5 out of 5

    (verified owner):

    Life changing, would like a black cowboy and a tall black boot.

  3. 5 out of 5

    (verified owner):

    Love Them!!!!

  4. 5 out of 5


    I have been wearing my Z-coils for over 5 years now. I just wish I could get a dealer closer to me, sometimes I need help. I wish you had some kind of discount ordering more than one set of coils, I used to pay that to have them installed and got new cushions each time for the same price. I have both 1.0 and 2.0, love them both!

  5. 4 out of 5



  6. 5 out of 5


    I have worked on hard concrete floors for more than 20 yrs and Z-Coil footwear are the best I have ever found. They have helped my lower back issues in the work place.

  7. 5 out of 5


    Greatest footwear I have ever owned. Only boots I have worn for eight years. I have recommended them to many others who have inquired about them because they look so different. Never tired of telling them. I still have my original pair from eight years ago. all they need is new soles. I wore them for four years before i retired them. THANK YOU Z-COIL.

  8. 4 out of 5


    The workboots make it so I can stand on cement floors all day with out pain in my knees and feet. The bottom of the heel could be made better because rocks can punch holes in them.

  9. 4 out of 5


    You need more options for composite safety toe the options you have are very expensive they have forced me to go to different shoes for safety toe

  10. 4 out of 5

    (verified owner):

    You’re about to price your self out of my business

  11. 5 out of 5


    I love the shoe. They make my feet feel so good.

  12. 5 out of 5

    (verified owner):

    “Without my Z-Coil boots I would be laid up by noon everyday, I work a lot on concrete during the day as well as in the evening…the only reason I can function in the evening is my Z Coil prime boots…

    Back surgery and now arthritis due to injurys in back and legs would put most in a wheelchair…my Z coil footwear keep me on my feet all day without unbearable pain and drug free…

    I have been wearing Z coil footwear for a dozen years now and will continue to as long as I walk this earth…

    Thank you Z coil for the excellent product and service
    Neil B. Stratton”

  13. 4 out of 5


    “The Mens Z Coil RX Prime Work Boots 11 M Black Enclosed Heel that I last bought have very noisy heels and a noticeable clack with each step.

  14. 5 out of 5


    Really can’t imagine not having these shoes in my line of business they have saved my knees, no more pain at all!

  15. 5 out of 5


    Need to have some where in Nashville Tn. Area Love the boots.

  16. 5 out of 5


    I continue to enjoy the product after 13+years. I had the sole replaced once before.

  17. 5 out of 5


    My wife says that I, “Became a nicer person after about a week of wearing these shoes”. I served over 22 years in the military and received multiple knee, foot, back. and hip injuries. These shoes raise my quality of life daily. Thank you very much.

  18. 5 out of 5


    Great! I have had back surgery and both knees scoped. I’m pain free with my Z-Coil shoes!

  19. 4 out of 5


    My only issue is the the heel spring lasted only 2 weeks but on the flip side Z Coil sent me a more rugged heel spring at no additional charge which means I will be buying more shoes. The shoes really do work I’M AMAZED!!!

  20. 5 out of 5


    Love your product, I have been using them for 15 yrs.

  21. 5 out of 5


    These shoes are unbelievable! They have allowed me to walk so much farther than I otherwise could have. I just can’t thank the makers enough, and hope they never go out of business! Having said that, it seems to hurt people who can’t stand up straight?! I guess it’s from correcting their posture? Other than that, I wish I had them my whole life, and hopefully will the rest of my life!

  22. 5 out of 5

    (verified owner):

    These boots are what I wear every day. I had heel surgery years ago and nerves were damaged. Don’t know how I would live without them.

  23. 5 out of 5


    I had an accident in September of 2002 that broke my right heel into 30+ pieces. The Podiatrist who reconstructed it told me that he did not do any fusing of the ankle in hopes that more modern joint repair techniques would become available in the five years following the surgery. However, he estimated that I would need to have my ankle fused by 2005. Z-Coils have prevented the fusion surgery to date, 2015.08.05.

  24. 5 out of 5


    I work 12 hour shifts on concrete. I would not survive without Z-Coils.

  25. 5 out of 5


    Expensive but how much are your knees worth? It’s a “keeper”! Couldn’t believe they could stretch them for a wide EE+ foot. Happy with the shoes & happy with the company.

  26. 5 out of 5


    “I have an odd recurring foot issue where i can’t walk from pain and swelling. I’ve found the support and orthotic foot bed allow me to walk with greatly reduced pain…often wearing Z-coil shoes will heal the pain. Even without the foot issue, I can be on my feet all day and the Z-coil’s allow me to work with great comfort. As a film producer and director the covered heel of my workbook also reduces the possibility of getting snagged in the multitude of cables on set.
    The last added plus…I’m taller wearing my Z-coils too.”

  27. 5 out of 5


    “I love the prime workboot! I have bought 4 pairs already. I buy the men’s size 9 to accommodate my foot width.

  28. 5 out of 5


    Love them. Wearing them extended my working life. Bought them for family. Wish there were purple Z-coil flip flops ;).

  29. 5 out of 5


    I just ordered another pair of desert hikers composite toe for work which now makes 4 pair total. I also own this model which is a little hot for the factory floor of which I have over 45 years on. Not to worry these are my hunting boot. I wear them all over the Ozarks. Every thing from your feet and all the way up you’re spinal cord will thank you every time you put them on.

  30. 5 out of 5


    I’m very happy with the boots

  31. 5 out of 5


    Need a stylish leather for the work place for men.The clog is to much on the ladies side and is hard for a guy to wear at work. Need something to go with slacks,no tennis shoe look.I am a executive who is wearing the boots under my slacks because they work so darn well.My only.complaint is the lack of semi casual wear.So when you make the executive model give me a call I will be your first purchase no b.s..Thanks for making a awesome product.Truly Luigi Lezza.

  32. 5 out of 5


    The best shoe in the world. When you have a pair on your feet it is like walking on sand. On hard surfaces the shoe works better than any other shoe on the planet. It helped me correct my heal spurs and walking on the outsides of the heal. Now I walk straight. I have had Z Coils for over 15 years and it has saved my back and joints.

  33. 5 out of 5


    These are all I have worn since 2006.

  34. 5 out of 5


    I love these shoes!

  35. 5 out of 5


    Z-coil are by far the best shoes I have ever invested in. They have changed my life. Before Z-coil, doctors said I would need expensive surgeries to correct my plantar fasciitis, along with months out of work. It was all I could do to get thru the day because of the pain. I found a Z-coil store online, went and purchased the freedom black for my first pair and my life has gone forward from that day. After 1 week of wearing these shoes my pain simply started dissolving. Now, my family and I are avid hikers, hiking 3 to 5 miles on a regular basis. Before, it was a struggle to walk to the mailbox, now I’m ready to climb Mt Everest! Z-coil are my MIRACLE shoes. I own 6 pairs of Z-coil in different styles.The prime boots and sidewinder are my most comfortable. I may never wear traditional shoes again.

  36. 5 out of 5


    With a disability that inhibits my walking with a limp, the Z-Coil shoes correct my walking/balance and I only have a slight limp with these shoes! No cane is needed as before and I feel wonderful.

  37. 5 out of 5

    (verified owner):

    I love the Z-coil boots, don’t like wearing anything else. I work at a job where I am on my feet 12 hrs. a day most days sometimes even longer. My feet don’t hurt.

  38. 5 out of 5


    I love my z-coils. Best shoe/boots anyone could ever get for comfort and durability. (9 years later I’m still wearing them).

  39. 5 out of 5

    (verified owner):

    “I love the comfort and style of these boots, The pluses, they help my back out being on hard surfaces all day and I am very happy I bought them.

  40. 4 out of 5


    Have been wearing for 12 years took a little getting used to but good since then and now have 4 pair. Wear every day for work spend 10 hours a day on concrete walking up to 10 miles.The only complaint is wish they would last a little longer but I guess at 50 miles a week; that’s not bad. Looking to buy another pair before years end

  41. 5 out of 5


    I have been a mechanic for over 35 and being on my feet for 8-10 hours a day I was always looking for comfortable footwear. I had constant back, knee and foot pain. Then a friend told me about z coils. I was skeptical when I first saw them but after wearing them for a day I was a believer. I no longer have any pain. These are the best work boots I have ever owned and they are very comfortable. I only wish I would have known about them much sooner. Thank you for a wonderful product.

  42. 5 out of 5


    I tried these z coils on and now its the only shoe I wear. Extremely comfortable,they really do work.I love mine.

  43. 5 out of 5


    I love the work boots for work! They have literally saved my job! I walk and stand, on concrete, for 7 hours straight, logging 4 to 5.5 miles per day. The prime work boots are excellent for my knees, arches, ankles, back, neuroma’s, bunions and hammer toes. I would highly recommend both the shoes and the boots to anyone who suffers from chronic foot pain. They are truly a lifesaver!

  44. 4 out of 5


    Seems better than my previous work shoes. Not very good for running.

  45. 5 out of 5


    “After several back operations and lots of pain when walking,I tried Z-Coil and found they helped greatly. I Have other shoes, but I find Z-Coil gives me the most relief. They do what they advertise and relieve pressure from the knees and lower back.”

  46. 5 out of 5


    I really enjoy my z-coils. I do a lot of walking at work and walking in rough areas at a construction site. I use to have aches in my feet and back at the end of the day. Nothing major but I did not want it to get worse over time. Now I have no aches at the end of the day. I noticed on a long weekend off and not wearing my z-coil boots for work; I went back to work and realized how much I missed my z-coils. They feel extremely comfortable and I have not found any other boot or shoe to match up to z-coils.

  47. 5 out of 5


    I like the boot wish they were a little more durable and fashionable.

  48. 5 out of 5


    Excellent! Very comfortable, many insole arch options greatly help reduce sliding and other problems in other footwear. Also I wear an ankle brace which wears down other shoes quickly, so far these seem to be holding up well! They offer good support and wide base as well even though they have a “heel” and my ankle doesn’t bobble as in less supportive shoes.

  49. 5 out of 5


    I have had Z-CoiL’s for years. My son went on a church mission to Brazil and did so much walking and was suffering so much. We sent him everything we could think of to help his feet and legs. Until I remembered Z-CoiL, and I sent him a pair it was a God send. His foot and leg pain went away and he was able to do his mission successfully. My husband then decided he wanted a pair and so I ordered him a pair and now he is loving his. I have another son that wants a pair but I am saving to get him some. Thank you Z-CoiL. We love you.

  50. 5 out of 5


    Very comfortable. Easy to wear. Size chart is accurate. Well made product.

  51. 5 out of 5


    The best boot ever! My wife hates the way they look but my feet or knees or back don’t hurt anymore. 5 stars! Its Worth The Money

  52. 5 out of 5


    I love my boots!!! I’m concerned with one of the heels rattling!! As for comfort they are the best!!!

  53. 5 out of 5


    The work boots are the most comfortable shoes I have ever worn and great for hiking.

  54. 5 out of 5


    Wonderful shoes! A little expensive… my knees don’t think so. Wish they had stores in the Northeast.

  55. 5 out of 5


    With terrible foot problems and having to stand for work most of the day, it’s like having shock absorbers for the body and they really help me get through the day.

  56. 5 out of 5


    When it comes to knee pain relief…Z-CoiL’s are NUMBER ONE!!! After two surgeries on my left knee…they are not simply “nice”…they are “NECESSARY”!!!!!

  57. 5 out of 5


    I own two workboots, love your design for the shock absorbing coil, and that the heels are replaceable.

  58. 5 out of 5


    I love my shoes. I have been at my job for 35 years. I wished I had ordered them long time ago. I am happy thank you.

  59. 3 out of 5


    I would rate them excellent, 5 stars in terms of comfort and solution to my plantar fasciitis but very low on style and design.

  60. 5 out of 5

    (verified owner):

    “I had a knee injury and was worried I could not go back to work. My pharmacist pulled me into her office and let me try her Z-CoiL’s. The Z-CoiL’s changed my life, and I can even run again at age 60. I now run circles around all my co-workers. I tell everyone I know about Z-CoiL’s. “

  61. 3 out of 5


    Because of many years working on concrete, working as a tester in the auto industry I started developing Plantar Fasciitis, I tried many other shoes and none of them helped with the pain I was experiencing, My sister recommended Z-CoiL to me and I have been wearing them for 10 years. I have 10 pairs currently. I wore the Prime Workboots all of the time until I wore them out each time, They are a great moderate level workboot. Z-CoiL’s have all but gotten rid of my Plantar Fasciitis, and I am able to continue doing volunteer construction work even though I am now retired. Thank you!!

  62. 5 out of 5


    I have owned what will now be 4 pairs of these boots. I have lots of “problems” with my feet such as chronic plantar fasciitis made worse by fibromyalgia. These boots are the only shoes that EVER give me major relief. For about a year, they were unavailable. i spent a fortune trying to find substitutes. There were none. additionally, i have always worn boots which are not only a fashion choice, but also as a motorcycle and scooter rider. As of today with my Purchasing of these boots I am back to not only health but also safety. Thanks.

  63. 5 out of 5


    My husband saw a colleague wearing a Z-CoiL boot at work many years ago,he asked him about them. My husband can’t live without them! (literally he would be crippled and in bed, long story about his feet…) So, although they are a rather expensive tool, we can’t find a better substitute, and it keeps my very hard-working husband up and running.
    Thank You!

  64. 4 out of 5


    I work for the US Govt. and am on my feet all day. The Prime boot is a great choice. I only use Z-Coil’s. I have 12 pair, 10 which are active. I have given up all my other shoes.

  65. 5 out of 5


    This is a great boot. Wide toe box. This is my fourth Z-CoiL Boot. I slipped a few years ago and my Doc said my working days were over. Z-CoiL has allowed me to keep working and walking. Before Z-CoiL I used a walking stick. Its an amazing invention.

Add a review

The Prime Workboot was built specifically for those whose work required a boot. It runs slightly wider than our Freedom Classics. The shoe is built for a normal E width but because it is a lace-up, it can be adjusted for all widths C through EE. We built the toebox (ball of the foot) to a E width to prevent irritation in this area

This shoe runs true to size so order the size that you normally are. For unknown size, measure your foot length on a ruler and use the size chart below to find your size.

This shoe is ergonomically designed with our standard great fit features:
-a rounded heel,
- a built in orthotic with a standard arch,
-a wider than normal toebox width for better fit in the toe area
-a padded tongue and collar for decreased abrasion
-a rocker bottom for easy mobility
-conical spring in the heel for 50% impact reduction to the body
-speed lacing on top
-above the ankle support

ZCoiL Mens Size Guide

ZCoiL Womens Size Guide