Sofia FWK4001 right profile
Sofia FWK4001 left 45
Sofia FWK4001 top
Sofia FWK4001 sole
Sofia Skirt
Sofia Black Skirt


Style #: FW-K4001
4.84 out of 5 based on 38 customer ratings
(38 customer reviews)

$239.95 USD Or pay 3 Payments of $79.98 USD without interest

There is no need to sacrifice style for comfort anymore. Re-introducing the Sofia by Z-CoiL. This single strap, classic Mary Jane is now available in many retail locations and online.


More Information

Product Description

This classic, single strap Mary Jane is a must have. The Sofia combines full-grain, black leather with an adjustable Velcro strap to insures a perfect fit.



  1. Genuine full grain leather
  2. Replaceable spring – available in either open or closed version
  3. Padded heel collar – adds comfort to the foot
  4. Forefoot EVA cushioning – cushions the ball of the foot and toes
  5. Built-in Z-Orthotic® – protects plantar ligaments
  6. Slip resistant outsole – helps to prevent slipping on water.
  7. Felt lined removable insole – conforms to the foot shape
  8. Imported Upper / spring unit made in USA / Assembled in the USA


Replacement Parts:


Open CoiL:  Replace with the 1.0 Open Slip Resistant Coil.  Click Here.  Item# FP-KOC112

SR 1.0 Open Coil












Enclosed CoiL:  The 1.0 slip-resistant enclosed heel  is embedded with mesh for exceptional durability and life. Order Here.  Item #FP-KEC112.  To upgrade your purchase from an “open” coil to an “enclosed” coil for $20, simply add the enclosed coil to your cart during checkout.  Next add “COILCOVER” in the coupon section, and we will replace the open coil for an enclosed coil.  The discount will be reflected in your total.

Enclosed Heel Slip Resistant

38 reviews for Sofia

  1. 5 out of 5

    (verified owner):

    Need more dressy shoes for special occasions!

  2. 5 out of 5

    (verified owner):

    Very comfortable and long lasting.

  3. 5 out of 5


    The best pair of shoes I have ever purchased. Since I have been wearing them, I can walk without pain.

  4. 5 out of 5

    (verified owner):

    I love my Z coils and only look forward to building my collection. I have multiple styles as they are the most comfortable shoes while I am on my feet at work as a nurse or out with my kids on a day long adventure with long walks in NYC or the amusement parks. I am disappointed the all leather white shoes are gone for my nursing shoes but will look into other styles My shoes are also a great conversation starter, people remember my shoes long before they remember my face. lol

  5. 5 out of 5


    5 Stars -Help with knee and back pain – MUST replace heels when they wear down or you can have problems. The material used in soles can dirty your carpets, wish they would change it.

  6. 5 out of 5


    I love my z-coil shoes. I wear them to work as I stand on concrete floors for 8 hours a day. With my shoes my feet never hurt and they help to take the stress off of my back , hips , knees and ankles. I wouldn’t be without them.

  7. 5 out of 5


    I’m not reviewing Z Coils but rather, I’m thinking of trying them. I have chronic and very painful PF in both feet, as well as back pain. I’ve had surgery on both feet with very little relief. These shoes are so very expensive but I might give them a try. I don’t understand that if these shoes are so amazing, how come there aren’t more choices and more locations to get personal service/fitting. All of the reviews here are great, but I still am not sure.

  8. 5 out of 5


    Great shoes!

  9. 5 out of 5

    (verified owner):

    I had a stroke. The z coil shoes help me walk better. The shoes help my balance while walking.

  10. 5 out of 5

    (verified owner):

    Only shoes I can wear that gives me relief from foot pain.

  11. 5 out of 5


    I have had Zcoils for more than 10 years. I adore them. I am in the process of purchasing 2 more pairs. I have a herniated disc in my lower back and I have immediate relief as soon as I put my zcoils on. I highly recommend Zcoils to everyone especially those with back issues. You can’t put a price tag on pain relief!

  12. 4 out of 5

    (verified owner):

    “I actually bought it for my grand mother with back problem. we might buy a different one because this one is hurting her ankle, the design is a little high on the ankle part that it hurts her. But she likes the comfort on her back

  13. 5 out of 5

    (verified owner):

    I’ve been wearing Z-Coils for work (standing and walking on concrete floors for 8-10 hrs. a day) the past seven years and they have made a tremendous improvement in the quality of my life. Having suffered severe scoliosis of the lower back all my life and extreme whiplash from an auto accident I began seeing a chiropractor who was the one who told me about Z-Coil shoes. Before Z-Coils at the end of the workday my lower back, legs, and feet would be in such pain I couldn’t do much at home. Since Z-Coils I am practically pain free when I get off work and am able to take care my home and family the way they deserve. While Z-Coil shoes are expensive they are well made and last longer than any other shoe I have ever worn. What I save in reduced visits to the chiropractor balances out the increased cost of the shoe.

  14. 4 out of 5


    Z coils have greatly alleviated my plantar fasciitis. I’ve been in health care 26 years and like many other professions, work on concrete based surfaces, which are hard on feet. I work both a hospital and a jail and Z coil shoes have made working on these surfaces much better. In addition, the upon waking pain associated with PF I have has all but disappeared. The built in orthotic and load bearing coil are magic to my feet!

  15. 5 out of 5

    (verified owner):

    Best pair of shoe there is.

  16. 5 out of 5


    Need more women dress shoes.

  17. 5 out of 5


    I try to tell nurses who complain that their feet are killing them to try Z-coils…. But alas they want to suffer… I love them and can’t fathom my shifts without it them.

  18. 5 out of 5

    (verified owner):

    “Helps hips, back, neck and knees.
    Also, so energetic !!”

  19. 5 out of 5


    Love them! Can’t live without them.

  20. 4 out of 5

    (verified owner):

    Shoes feel good. I would like fancier styles for work. Pricey

  21. 5 out of 5

    (verified owner):

    I bought my first pair of z-coils in 2006. Although I only wear z-coil shoes I take very good care of them with monthly cleaning and frequent oiling, so all look brand new. Thus far they have saved me knee surgery on right leg, foot surgery for high arches that have gone totally flat on both feet and a brace for herniated disk in lower back. My weight is normal but my bone structure is small with wide hips and shoulders (17″). I think as long as I keep the impact lowered on my bones and joints I will continue to have good health in those areas, unlike in my younger days. I am 70 and I have 7 pairs of z-coils. I highly recommend them.

  22. 2 out of 5


    Need half sizes. My feet are very sensitive, I really need size 6.5 but since they don’t have, so I got size 7. And the straps are hurting my feet because the shoes are a loose and the straps really the only things that holding it so it puts pressure with every steps I make. Size 6 is really tight also puts pressure. Zcoil use to make half sizes but they stopped.

  23. 5 out of 5

    (verified owner):

    “They straiten from head to toe posture.Take away the lower back pain, and they take away the knee pain.”

  24. 5 out of 5


    “When there was a store in San Diego area with personal help purchasing was easy. I don’t feel comfortable ordering on the Internet.In my opinion Z COILS need more exposure through advertising. I also would like somewhere to have personal service… I wear them for foot comfort, and have gone from owning many pretty shoes to owning only Z COILS…I CAN WALK FOR A LONG TIME in them.”

  25. 5 out of 5


    Z-Coil shoes are the only ones I can wear especially when I had severe knee pain 14 years ago. When I went to the former Z-Coil dealer in Ventura, CA, my severe pain went away instantly (a miracle)! That convinced me that Z-Coil is the only shoe I can wear. I tried wearing more fashionable expensive shoes but the pain wanted to come back. When I felt that, I would wear my Z-Coil shoes immediately. I wear the Mary Janes, Sidewinder, Sofia when I’m all dressed up. I love Z-Coil shoes; I wear the other shoes daily when working. Thank you for Z-Coil shoes!

  26. 5 out of 5

    (verified owner):

    These shoes are giving me much needed relief from my heel pain. Thank you for getting me through the day and making me cry less.

  27. 5 out of 5

    (verified owner):

    These shoes have been great for when I’m having joint trouble related to autoimmune issues and when I’ve overdone it running.

  28. 5 out of 5

    (verified owner):

    I was walking with fore arm crutches for years and started wearing Z-Coils. I haven’t used my crutches in 6 years now because of my Z-Coils. Balance and back pain are SO much better!

  29. 5 out of 5

    (verified owner):

    I love each of my pairs of zcoil shoes. I have chronic plantar fasciitis and chronic back pain. Before I started wearing Zcoils, I could not stand for more than 30 minutes without foot and back pain. Now, I can stand for as long as 3 hours before my feet start hurting. I do wish you made a white version of the Sofia or sidewinder or something similarly dressy to wear with summertime skirts/dresses. The black dress shoe just doesn’t look right with the “light colors” one wears in summer and neither do the black sidewinders.

  30. 5 out of 5

    (verified owner):

    I fell and hurt my knee severely, a friend told me about Z-CoiL’s and how they helped with her pain, They help me to walk normally with my bad knee. I experienced instant relief once I put these on. Thanks.

  31. 5 out of 5


    I love my Z-Coils. They are the only thing I wear.

  32. 5 out of 5


    This last pair was like it was made just for me!! love them!!

  33. 5 out of 5

    (verified owner):

    I have 4 herniated discs which are pinching several nerves. The Z-Coil shoes help me walk more easily because they do relieve some of the pain. They make going to work and to the store easier. My only complaint is that there are not many dress shoe options for women. I like the Sofia, but would like to have a different look sometimes, or different color. Also, I would love to own a pair of the western style boots. Please make a pair in women size 5!!!

  34. 5 out of 5

    (verified owner):

    I wear Z-CoiL’s daily at work and I recently purchased a more dressy, Mary Jane-type and ordered the heel enclosure. I wear them for business and dress occasions where I am going to be doing more walking and standing. The improvement in knee and back pain is exceptional. I have worn Z-CoiL shoes since the fall of 2004 when a friend passed on a $10.00 coupon. Besides the pronation correction and metatarsal relief, I do not suffer from heel pain due to heel spur diagnosis in 1991. I thought I was headed for foot surgery until I started wearing Z-CoiL’s.

  35. 5 out of 5


    I had all kinds of foot trouble. Doctor says I have nerve damage similar to carpal tunnel syndrome. I have been wearing Z-CoiL’s for years and I have just about every pair they make. The Mary-Jane is one of my favorites. I could only walk about 1/4 mile per day before Z-CoiL, and now I walk 5 miles per day. These are the only shoes I wear. I also wear them exclusively at my hospital where I work as an RN. Thank you, Thank you, Thank you, Z-CoiL.

  36. 5 out of 5

    (verified owner):

    This is my 4th pair of Z-Coil’s. As I nurse, i have to walk ALOT! After a full day’s work I don’t have to worry about my back or legs hurting when I use my
    Z-CoiL’s. And when I’m teaching, these are the best any way you look at it. I Wouldn’t trade in my Z-Coil’s for anything. These are GREAT!

  37. 5 out of 5


    I LOVE all my z-coils. I first saw them at a national conference, when an entire exhibitor group were all wearing various styles of z-coils. My feet were aching from all the walking and one of the girls was wearing clogs, slipped them off and said to try them. I did and instantly, no hurting feet! I have the Sofia. I have black but for a little while, they made navy blue mary janes. I love the fact that there is a color besides BLACK! We need more navy blues, browns and even maroon colored shoes.
    It’s nice the tennis shoes are white and another color, but we need other colors, too.
    I have black and tan sandals, navy and black mary janes, a black leather closed shoe, white and blue tennis shoes and the work boot (no steel toe). All the shoes have been remarkable, for no pain! Only the work boots were made horribly! I’ll tell about them in the boot review. Everything else gets a solid 5 stars! Yea!!!!!

  38. 5 out of 5


    I love the Sofia. I had a problem with my knee. I hurt so bad I was nearly in tears for months. Z-Coils were recommended by my doctor but I waited over two years to purchase. Now it is all I can wear. It was like a miracle from the first day – my pain is completely gone. I even wore these during my wedding. If I take them off my knee hurts again. Z-Coils really activate my body allowing me to be very active. People think I am 30 years younger than I am – due to my shoes. Now I need a Z-Coil for the shower and a dressy boot.

Add a review

The Sofia is our classic "Mary Jane" style shoe. The shoe is built for a normal D width but because it is assumed that you will wear the shoe with either nylons or barefoot, the shoe runs one size large. 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 rocker bottom for easy mobility
  • conical spring in the heel for 50% impact reduction to the body
Womens size conversion chart   Mens size conversion chart