Do custom insoles help Achilles tendonitis?

Yes. Achilles tendonitis is often aggravated by the 'wringing out' of the tendon when the foot overpronates. Custom orthotics correct this alignment, stopping the rotational force. Additionally, they often provide a functional heel lift which reduces the tensile strain on the tendon.

Will these help with morning stiffness?

Morning stiffness occurs because the tendon tightens overnight and tears slightly when you walk. By reducing the daily strain and inflammation while you walk during the day, the tendon can heal, leading to significantly less pain and stiffness in the mornings.

Do I need a heel lift?

Many patients with Achilles issues benefit from a heel lift. Bilt Labs custom orthotics are designed with a deep heel cup that naturally elevates and stabilizes the heel bone (calcaneus), providing relief similar to a heel lift but with the added benefit of biomechanical correction.

Are Bilt Labs orthotics truly custom medical-grade?

Yes. These are custom-fabricated from a physical mold of your foot using the same medical-grade polymers and EVA foams supplied to podiatry clinics. Each pair is reviewed by technicians for clinical accuracy.

What is the warranty on custom insoles?

Bilt Labs provides a lifetime warranty on the orthotic shell against breaking. We also offer a 6-month money-back guarantee with free adjustments.

Side view of custom orthotic insole with vegan leather top cover and yellow memory foam cushioning for foot pain relief

Custom Bilt Labs insole with vegan leather top cover and high rebound cushioning for foot pain relief

Man standing barefoot on Bilt Labs custom insole box in home, targeting foot pain relief for conditions like flat feet and plantar fasciitis

custom insole with labeled benefits features on a gray background orthotics

Person inserting custom Bilt Labs orthotic insole into brown leather shoe for foot pain relief

Brown leather shoe cutaway showing custom orthotic insole for flat feet and heel pain relief by Bilt Labs

3D model design of feet with measurement labels on a gray background for orthotics and custom insoles

Orthotic Insoles for Achilles Tendonitis – Custom Heel Lift & Support

Bilt Labs is Eligible

Targeted Correction

Select Your Pain Select Your Pain or Condition

Medically Engineered to treat the following:

Heel Pain Plantar Fasciitis

Arch Pain Flat Feet / High Arches

Alignment Overpronation • Supination

Ball of Foot Metatarsalgia

Burning / Tingling Morton's Neuroma

Big Toe Bunions

Achilles Tendonitis

Complex Multiple Issues

Heel Spurs Bone Spurs

View More Conditions

Disclaimer: This tool is for informational purposes only and is not a replacement for professional medical advice, diagnosis, or treatment. We are not diagnosing your condition. Always consult a healthcare provider for medical concerns.

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Medical-Grade Orthotics Cost

$600 At A Clinic

$249 Bilt Labs Direct

6-Month Fit
Guarantee

2 Free
Adjustments

FSA / HSA
Approved

Achilles Tendonitis Orthotics:

Ultimate Achilles Tendonitis Relief: Our therapeutic, custom orthotics are precision-engineered to reduce stress and strain on the painful Achilles tendon. These are not simply generic insoles; each device is custom-made from a precise mold of your foot to ensure optimal rearfoot stabilization and targeted shock absorption, immediately reducing the tension pulling on the tendon and promoting healing. All our custom devices come with a Bilt Labs warranty and guarantee.

Precision Tendon Offloading

Achilles tendon strain is often caused by instability, excessive pronation, and sudden heel impact. Our custom design features a deep, stabilizing heel cup that minimizes side-to-side motion, and a controlled arch contour that limits inward rolling. This combination ensures the foot strikes the ground correctly and the tendon remains aligned, significantly reducing the inflammatory stress experienced during walking and activity.

Unparalleled Performance

Built from your unique foot mold and detailed health information, we guarantee a truly precise fit that mass-produced supports cannot match. Choosing Bilt Labs is choosing a durable, evidence-based therapy that offers reliable support and improves gait alignment for long-term comfort and mobility. Backed by our lifetime shell warranty.

Back to overview of Achilles Tendonitis orthotics.

Choose Your Comfort Layer

Everyday (Memory Foam): Ideal for maximum cushion and all-day standing or walking.
Active (High Rebound): Engineered for high-performance use, providing superior shock absorption and energy return for fitness and long work shifts.

Proven Results

100,000+ Lives
Restored

Stop the micro-tearing and let your tendon heal. Our medical-grade custom orthotics provide the precision heel lift and alignment your Achilles needs to recover.

Clinically Proven

6-Month Guarantee

Made in the USA

Order Your Custom Mold

Save 50% vs. Traditional Clinics

Accreditations & Partners

Understanding Your Needs

Why Your Achilles Won't Heal?

The Mechanics of Achilles Strain

Achilles pain is often caused by excessive strain due to overpronation or low arch height. When your arch collapses, it twists the heel bone, creating a "wringing out" effect on the tendon with every step.

This constant stretching causes micro-tears in the tissue faster than your body can repair them. Without correcting the angle of your heel and lifting the foot slightly, the cycle of inflammation continues indefinitely.

We Treat The Root Cause Of:

Achilles Tendonitis (Acute Inflammation).
Achilles Tendinosis (Chronic Degeneration).
Sever's Disease (Calcaneal Apophysitis).
Haglund's Deformity ("Pump Bump").

Fast Facts

Load: The Achilles absorbs 4x your body weight while walking.
Impact: Misalignment twists the tendon, preventing healing.
Correction: Offloading the tendon is the #1 medical treatment.

Why Custom Orthotics Are The Answer

The goal of treatment is to Restore Neutral Alignment & Offload.

Generic insoles are often flat or too soft. Bilt Labs custom orthotics feature a deep heel cup and calculated arch support to align the calcaneus (heel bone), reducing torque. We can also accommodate a slight heel lift if needed to reduce tension on the tendon.

Board Certified Expertise

Dr. William Naughton

DPM • Chief Medical Officer

"No two feet are alike, so why settle for generic support? Treating serious foot pain with a drugstore insole is like trying to fix your vision with someone else's glasses. Bilt Labs delivers the specific biomechanical correction your unique foot structure requires."

NPI: 1245247089

License: DPM00321

Board Certified Podiatrist

20+ Years Clinical Experience

View Full Bio & Credentials

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The Process

Clinical Relief from Home

Professional-grade orthotics without the doctor's visit. Here is how we do it:

Order Your Kit

Start with a free analysis and order your custom impression kit.

Mold Your Feet

Use our custom kit to take a detailed mold of your feet at home and send it back to the lab.

We Build & Ship

Your custom insoles are approved by a DPM, precision-milled in the USA, and delivered to your home.

Why Choose Bilt Labs?

Traditional

Podiatrist

Cost $400 - $800+
Lifespan 1-2 Years
Visit Req. Yes
Support Corrective
Guarantee Rarely

BEST VALUE

The Smart Choice

Bilt Labs

Cost $249
Lifespan 2-3 Years
Visit Req. No (At Home)
Support Corrective
Guarantee 6 Months

Order Your Custom Mold

Drugstore

OTC Insoles

Cost $20 - $60
Lifespan 3-6 Months
Visit Req. No
Support Minimal
Guarantee None

Treating the Root Cause of Strain

The Problem

Why Generic Insoles Fail

Drugstore gels offer cushion but zero structural protection. They allow the heel to drop and the arch to collapse with every step, stretching the inflamed tendon further and preventing scar tissue from healing properly.

Result: Chronic pain, recurring inflammation, and potential rupture.

The Bilt Solution

Precision Custom Offloading

We capture your unique heel width and arch height to create a device that stabilizes the rearfoot. This reduces the "pull" on the Achilles tendon, giving it the slack it needs to finally repair itself.

Deep Heel Cup

Alignment

Tendon Relief

Laser-Precision Manufacturing

Your orthotics aren't pulled off a shelf. They are milled from a solid block of medical-grade polymer using robotic CNC technology right here in the USA.

Sub-millimeter accuracy to your foot mold

Hand-finished by expert technicians

Made in the USA

Inside Our Lab

Ready for Pain-Free Living?

Don't wait another day in pain. Order your custom impression kit now and take the first step towards lasting relief.

Order Your Custom Mold

6-Month Guarantee Free Shipping Made in USA

Frequently Asked Questions

Custom Orthotics FAQ

What shoes should you not wear with Achilles tendonitis?

Avoid completely flat shoes (like flip-flops or ballet flats) and very high heels that pitch you forward. Flat shoes stretch the tendon excessively, while unsteady high heels can shorten it. You need a stable shoe with a moderate drop (10-12mm) to protect the tendon from strain.

What are the best insoles for Achilles tendonitis?

The best insoles provide a deep heel cup to stabilize the calcaneus (heel bone) and firm arch support to prevent overpronation. Crucially, Bilt Labs custom orthotics can also accommodate a slight heel lift, which reduces the tension on the Achilles tendon, allowing it to heal.

What is an orthosis for Achilles tendonitis?

An orthosis (orthotic) is a medical device designed to alter the biomechanics of the foot. For Achilles tendonitis, it specifically controls the heel's side-to-side movement (pronation) and supports the arch to stop the "wringing out" twisting motion that tears tendon fibers.

What shoes do podiatrists recommend for Achilles tendonitis?

Podiatrists recommend stiff-soled running or walking shoes with a firm heel counter and a moderate heel-to-toe drop. Adding custom orthotics to these shoes upgrades them into a medical treatment system by ensuring your foot remains in neutral alignment during movement.

Product & Service

How long does it take to receive my custom orthotics?

Once you place your order, we ship out your foot mold impression kit within 1-2 business days. After we receive your molds back at our lab, we design, build, and ship your custom orthotics within 21 business days.

Are these truly custom, medical-grade orthotics?

Yes. These are not "heat-moldable" or "shelf" insoles. They are custom-fabricated from a physical mold of your foot using the same medical-grade polymers and EVA foams we supply to podiatry clinics. Nothing is pre-made or off-the-shelf.

Do you take insurance or FSA/HSA?

We are approved and set up to accept insurance FSA/HSA cards directly at checkout. We can also send a detailed invoice for reimbursement. However, we do not bill insurance companies directly as that typically requires an in-person office visit.

How long will my custom orthotics last?

Bilt Labs custom orthotics typically last a minimum of 2-3 years. The orthotic shell itself often lasts longer (and has a lifetime warranty against breaking), but the top covers may show wear and can be refurbished.

What is your return/refund policy?

We offer a full 6-month trial period. If you are not fully happy with your orthotics by that time, you can return them for a full refund. We also offer 2 free adjustments during this period to ensure the fit is perfect.

Where are my orthotics made?

Your new custom orthotics are made in the United States. We are located in the Houston, Texas area. All fabrications, designs, and finishing are performed by experts right here in our Houston lab.

What is your warranty/guarantee policy?

Your orthotics include a Lifetime Warranty on the plastic orthotic shell against breaking or cracking. This does not include the top cover material, as that is a consumable item that naturally wears with use.

See what our customers have to say.

Excellent for price

Wore custom orthopedics for over 50 years the best I have found for price

Life changing

I was having issues while standing on dairy brick for 12+ hours. I couldn't afford the other brand a n d I came across this Bilt. Decided that it had to be better than the store bought insoles that I was buying 5 at a time. Ordering was easy and did the mold after a shift. What a difference they've made. Wish I knew earlier that they are covered by FSA. Customer for life and I've recommended them to everyone at work.

Had back problems

I am a big guy, who was having back problems. I bought a pair of these and within a week, my back started hurting less. And now I have virtually no back pain even when I'm on concrete all day.

Good Orthotics

These are nice, custom made orthotics at a good price. What more could one ask for?

Great Service and Product - Especially the Athletic Soles

I originally ordered a pair of everyday and athletic insoles. The process was straightforward and affordable (they are expensive but within reason and worth it!). The insoles fit my shoes well and I’ve been especially impressed with the athletic insoles. They have kept foot and knee pain at bay completely while running.

The everyday insoles I was less impressed with and actually do not use often. They don’t make contact with my arches like the athletics do so I don’t feel as supported. I keep them in a pair of boots that needed some better insoles. For most everyday activity I still use my Täos shoes and insoles. This arrangement seems to work well. Täos insoles also have odor control so I don’t need to worry about stinky feet! Not so, with the customs.

Overall, this is a great product that has kept my quality of life where I want it to be. I am very grateful these exist and are easy to obtain without seeing a doctor!

I would recommend the regular (blue) athletic insoles overall for anyone purchasing these for the first time. I just place a reorder and I’m trying the “high rebound” athletic insoles this time. Expected the same or even better performance and quality but can’t speak to those yet!

Thank you Bilt Labs!

Reordered additional orthotics

I had such great success wearing Bilt Labs orthotics that I ordered an additional pair. Although this was done online, Laura, in customer service called me to tell me about a different orthotic than the ones I originally ordered that might be beneficial for my situation. They really do care about doing the best they can do for their customers.

Re-ordering these great insoles!

I was having foot pain, but after using these inserts I no longer have any problems. I'm so glad to have these quality insoles! I recently placed an order for an additional pair.

No More Podiatrist Office Visits

I had originally gone to a podiatrist for a custom mold. Once it started wearing out, I looked for an alternative to avoid the excessive cost and time associated with the process. I submitted my own mold using BILT Labs following the directions and have been as pleased, if not more with the product. I cannot wear shoes without inserts and was down to only the BILT product. I decided to re-order with BILT Labs not only because the product was just as good, but it was also just a fraction of the cost of the office visit product. Thank you!!

High quality and easy to order!

I have worn custom orthotics for 30 years. It was always difficult to re-establish a new podiatrist and lab to re-order after several years. Biltlabs makes that so easy! The kit is so easy to use and then you can order, re-order, add other types of orthotics. And Biltlabs offers discounts when ordering more than 1 pair. I have several so I don’t have to change them in and out of my primary shoes. The orthotics are high quality, allow me to walk and run without hip, knee, and foot pain! I wear them in all of my shoes. They are so comfortable and align my body. I can highly recommend Biltlabs!

Outstanding

I own several pairs of these custom insoles and they're fantastic! I just placed a re-order and I can't wait for them to arrive. The service has always been impeccable regardless of who I've been in contact with. I've spoken with Laura a couple of times and she's been nothing short of awesome: helpful, professional, and pleasant. I'm so glad that I discovered Bilt Labs. They offer quality at an excellent value.

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Orthotic Insoles for Achilles Tendonitis – Custom Heel Lift & Support

Select Your Pain Select Your Pain or Condition

Analyzing Symptoms