If the steel coil wears through the rubber outsole, you can purchase replacement coils here or order by calling 1-800-268-6239. Remember to note the coil’s positioning before removal to install the new coil correctly.

Here's our how-to replace the coil video.

If you notice a clicking sound or feel the coil has become loose, follow these steps:

• Remove the padded insole.
• Lift the fabric flap at the heel to access the bolt.
• Tighten the bolt with a Phillips screwdriver (use firm pressure but avoid stripping the head).
• Watch the video here

If the “Z-Nut” holding the coil loosens, contact Z-CoiL Customer Service at 1-800-268-6239 for guidance.

Protect your Z-CoiLs by avoiding hot environments like parked cars in the sun. High temperatures can affect materials, especially the forefoot cushioning and Z-Orthotic®.

Wipe them down with a cloth dipped in mild, soapy water. For leather models, use a leather cleaner and conditioner to keep them looking like new. Insoles can be gently hand-washed and air-dried for freshness.

Rotate between pairs if possible, giving each set time to air out. This prolongs their lifespan and keeps them feeling fresh.

We’re so confident that you’ll love your new Z-CoiLs that we offer two distinct trial programs for your peace of mind. Depending on the type of purchase, you’ll enjoy either our 30-Day Risk Free Trial or our 14-Day Free Trial Program. Here’s how each works:

30-Day Free Trial: All Regular Purchases

With our 30-Day Free Trial, you have a full month to experience Z-CoiL comfort with any regular purchase. Wear your shoes as much as you need during this time—whether you’re walking, working, or exploring—and if they’re not the perfect fit, return them in any condition within 30 days for a hassle-free refund. This trial is available for all orders made through our website, over the phone, or in-store at participating retailers.

14-Day Free Trial: Special Try-It Program

Our 14-Day Free Trial is part of our Special Try-It Program, designed for those who want a shorter trial period to see if Z-CoiL footwear is the right solution. Through this program, you can wear your Z-CoiLs in real-life situations for two weeks, absolutely free. This is a great option for those who are new to Z-CoiL and want a quick, commitment-free way to test our unique comfort and support. If they don’t meet your needs, simply return them within 14 days.