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Item# FW-K4001

5.00 out of 5
(4 customer reviews)


Just arrived! 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.

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SKU: FW-K4001. Categories: , , , , , .

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 – prevents slipping on slick/wet surfaces
  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

4 reviews for Sofia

  1. 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.

  2. 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!!!!!

  3. 5 out of 5

    (verified owner):

    This is my 4th pair of Z-Coils. 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-Coils. And when I’m teaching, these are the best any way you look at it. Wouldn’t trade in my Z-Coils for anything. These are GREAT!

  4. 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.

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

ZCoiL Mens Size Guide

ZCoiL Womens Size Guide