Lael Wilcox Cycling Insoles
Lael Wilcox Cycling Insoles
For shoes with thin removable inserts
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The power of carbon fiber - for your feet.
Carbon fiber insoles endorsed and worn by ultra-cyclist Lael Wilcox. For performance cyclists getting ultra firm arch support is non-negotiable. A wafer 1.25mm thin, these 100% carbon fiber arch supports are a game changer when it comes to improving biomechanics, delivering superior energy return, boosting performance, and minimizing injury risk. Finished off with a 3mm thin, ventilated full length top cover, Lael Wilcox Cycling Insoles fit perfectly in virtually all cycling shoes.
Million Mile Guarantee
Million Mile Guarantee
Tread Labs molded arch supports are unconditionally guaranteed. Forever.
If they ever crack or lose their shape, we’ll send you a new pair, no questions asked. From your first mile to your millionth, your satisfaction is our priority.
Use
Use
Before adding Lael Wilcox Cycling Insoles to your shoes, remove the factory inserts. While adjusting to your insoles, you may feel firm support along your arch, but after a week or so, you’ll probably forget you’re wearing them. Give yourself time to get used to the additional support. You’ll be glad you did.
Shipping
Shipping
We offer free shipping within the US. Transit time is 4-5 business days.
Shipping to Canada is $10 with a transit time of 5-7 business days.
International shipping costs $25 for 1-2 pairs and $40 for 3-5 pairs. All duties, taxes and fees are paid by the customer.
We ship Monday-Friday, excluding holidays.
Fitting Guide
Order insoles in the same size as the shoes they will go in.
Arch Height
Choose between low, medium, high and extra high arch heights by comparing your wet footprint.
| Your Wet Footprint | Describe Your Arch | Arch Height |
|---|---|---|
 |
My arch is flat when I stand or sit. | Low |
| |
My arch is flat when I stand but appears when I sit. | Medium |
 |
My arch is close to but doesn't touch the ground. | Medium |
 |
My arch is high off the ground when I stand. | High |
 |
No one has higher arches than me! | Extra high |
Insole Lengths
| Tread Labs Size | Regular & Thin Insole Lengths | Short Insole Length |
|---|---|---|
| Men's 4-4.5 Women's 5-5.5 |
9 1/4 in (23.5 cm) | 5 7/8 in (14.75 cm) |
| Men's 5-5.5 Women's 6-6.5 |
9 1/5 in (24.25 cm) | 6 in (15.5 cm) |
| Men's 6-6.5 Women's 7-7.5 |
9 3/4 in (25 cm) | 6 1/4 in (16 cm) |
| Men's 7-7.5 Women's 8-8.5 |
10 1/8 in (26 cm) | 6 1/2 in (16.5 cm) |
| Men's 8-8.5 Women's 9-9.5 |
10 1/2 in (26.5 cm) | 6 3/4 in (17 cm) |
| Men's 9-9.5 Women's 10-10.5 |
10 7/8 in (27.5 cm) | 7 in (17.5 cm) |
| Men's 10-10.5 Women's 11-11.5 |
11 1/8 in (28.5 cm) | 7 1/4 in (18.5 cm) |
| Men's 11-11.5 Women's 12-12.5 |
11 1/2 in (29 cm) | 7 3/8 in (19 cm) |
| Men's 12-12.5 Women's 13-13.5 |
11 7/8 in (30.25 cm) | 7 5/8 in (19.25 cm) |
| Men's 13-13.5 | 12 1/4 in (31 cm) | 7 7/8 in (20 cm) |
Insole Size Conversions
| Tread Labs Size | United Kingdom | European | Japan/China |
|---|---|---|---|
| Men 4-4.5 Women 5-5.5 |
3-3.5 | 35-35.5 | 22.5-23 |
| Men 5-5.5 Women 6-6.5 |
4-4.5 | 36-37 | 23.5-23.5 |
| Men 6-6.5 Women 7-7.5 |
5-5.5 | 38-38.5 | 24-24.5 |
| Men 7-7.5 Women 8-8.5 |
6-6.5 | 39-39.5 | 25-25.5 |
| Men 8-8.5 Women 9-9.5 |
7-7.5 | 40-41 | 26-26.5 |
| Men 9-9.5 Women 10-10.5 |
8-8.5 | 41.5-42 | 27-27.5 |
| Men 10-10.5 Women 11-11.5 |
9-9.5 | 42.5-43.5 | 28-28.5 |
| Men 11-11.5 Women 12-12.5 |
10-10.5 | 44-44.5 | 29-29.5 |
| Men 12-12.5 | 11-11.5 | 45-46 | 30-30.5 |
| Men 13-13.5 | 12-12.5 | 46.5-47 | 31-31.5 |
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One size does not fit all.
Pant's aren't one size fits all. Insoles shouldn't be either. Lael Wilcox cycling insoles come in four arch height – low, medium, high, and extra high – so you can get the perfect fit for your feet.
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Like new, on demand.
Tread Labs insoles are made with a 2-part system: a molded arch support and a replaceable top cover. Easily replace the top cover to make your insoles like new again.
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Fresher feet with every step.
Lael Wilcox cycling top covers are resilient, long-lasting, open-cell polyurethane foam topped with 100% recycled polyester fabric that's PURE antimicrobial treated to keep feet feeling fresh all day.
Lael Wilcox - Born To Ride
Lael Wilcox is an ultra-distance cyclist. Born in Anchorage, Alaska in 1987 she won the 2016 Trans Am Bike Race on her first attempt, becoming the first American winner, male or female. Measuring 4,400 miles the Trans Am is the premier self-supported bike race across the continental United States. The previous year, in 2015, Lael set the women’s record for the Tour Divide, a bike race from Banff, Canada to the Mexican border with a total race distance of 2,745 miles. These feats as well as those that followed led Bicycling Magazine in 2019 to describe Lael Wilcox as the ‘fastest ultra-endurance racer in the world.’
Tread Labs Supports Anchorage GRIT
Lael Wilcox co-founded GRIT, which stands for Girls Ride Into Tomorrow, in early 2017. GRIT is a mentorship program that seeks to empower girls through bikes, inspiring them to ride for transportation, travel, and fun. Tread Labs supports Lael and this project by donating $10 per pair sold.
Cycle Longer With Tread Labs
Bikepacking is the ultimate endurance challenge on a bike, combining multi-terrain biking with self-supported backpacking. It is about the spirit of adventure and freedom, traveling on roads, dirt roads, trails and singletracks. Having the necessary supplies and equipment is key. Wearing Tread Labs insoles will permit you to ride for longer, stronger. Lael Wilcox chooses to ride with Tread Labs insoles.