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PolySorb® Ultrathin

  • $19.99

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Catalog No.:   38-001

Ultra-Thin Contoured, Flexible Support
Cradles your feet with targeted cushioning that improves your athletic performance and prolongs the life of your shoes. Ideal for: tighter-fitting and minimal style shoes, walking, running, training and sports.

Polysorb® Cushioning Insoles provide the best combination of shock absorption and energy-return. This powerful duo works together to provide lasting comfort, help prevent injury and relieve foot pain. Spenco® PolySorb® Insoles are unconditionally guaranteed for one year.

The Shape That Feels Great®

For half sizes order the next size down.
For example, if you normally wear size 10.5, order a size 10.


• Ultra-thin cushioning
• Deep Heel Cup
• SpenCore® Material Heel and Forefoot Pad
• Lightweight PolySorb® Arch and Heel Support
• Heel-to-toe Cushioning
• First Ray Drop Zone
• Metatarsal Dome
• Technical Topcloth
•  Silpure antimicrobial

DSpenco 2 months ago

I purchased a pair of walking shoes whose insoles were not as comfortable as I think was possible. I have been a fan of the Cross Trainer for athletic shoes, but there was not enough room for these, so I thought I would see if Spenco had another option. I found these and ordered them directly from the website. They are definitely an upgrade from the original insoles and work great in the more confining space of my walking shoes.

Liz_11 4 months ago

I have used these inserts in my running shoes for the last 3 years and they work really well. They provide great support and make me feel like I'm running on springs or clouds. They also last for a long time and remain odor-free despite lots of long runs on hot days. Would definitely recommend these.

SR 4 months ago

These inserts are great! Very comfortable fit, especially for my arches. Helps my feet not hurt now for walks.

Jeannemarie 6 months ago

I wore these at Disneyland for fifteen solid hours, walking around and waiting in lines for rides. At the end of the day, I was tired but my feet did not hurt at all. Incredible but true!

Jane 8 months ago

They are perfect. I've tried so many things, I didn't know what to look for anymore. I have competing difficulties with one foot after 2 surgeries. They have give but are firm and hold their support at the same time. My doctor recommended them and I am grateful.

marshall 10 months ago

I have a pair of favorite boots that I wanted support in but my normal insoles would make them too tight. I was able to remove the standard shoe insole and slip this ultra thin style in. They are still my favorite boots and now my feet LOVE them too!

Tony 1 years ago

Well made product Fit my 4e width brooks addiction 12 very well

Hank 1 years ago

My feet still hurt a lot...these insoles are pretty much useless...not enough padding to make a difference. Very dissatisfied.

Dawn 1 years ago

I really like these , the other ones I've been wearing were good too , but after my foot injury,I had to go thinner . Thank you

rosebaileycv 1 years ago

I use Spenco insoles for a pair of hikers boots and my Brooks shoes. I have a medium arch and like the feel of the metatarsal pad. It seems to give me plenty of support for outdoor activities like light hiking, working out at gyms and everyday walking.

RAtoes 2 years ago

I have problems with my toes because of RA. These inserts make wearing my boots a comfort instead of a pain!

2 years ago

These polysorb ultra thin liners have helped my 88 year old Mom be able to step down without pain. They work well in tennis shoes where the insole can be pulled out and replaced with the polysorb. They also work well in mule style shoes. But do not work well in a flat or shallow type shoe.

conrad 2 years ago

My foot doctor told me to get these insoles. My 2nd set and very happy.

julie 3 years ago

Worked well to help heal the ulcer on the ball of my foot.

bigfoot 3 years ago

Awesome! Have these in every pair of shoes I own!

3 years ago

Searching for insoles is a struggle for me. It is a personal issue, but I can say that this pair is quality.

vana 3 years ago

I stuck them into my shoes and they are great. I have no fat in the balls of my feet and this insole really helps and they aren't very expensive and my podiatrist gave me my first pair.

climbhigh 3 years ago

These are far superior to the insoles that come with the shoe.They have a great heal cup that locks your heal into the shoe. They provide a firm cushioned feel that offers greater support and control on trails.

Josh Wardell 3 years ago

These do not add height or pressure. I've worn them in various shoes, and they have transformed even the cheaper pairs into some of the most comfortable shoes I've worn. I'm stocking up!

Bruce 3 years ago

Good value. Have been using for several weeks now and have noticed a big improvement over the (worn) insoles in my Asic Gel Kayano shoes. Not a runner but a committed walker, so they get a bit of use.

JA 3 years ago

I haven been using these inserts in my running shoes and enjoy the extra padding they give as well as the odor fighting! I would recommend them and I am now ordering more for my casual shoes as I have become accustomed to the comfort.

dazatian 3 years ago

This product has done wonders for my feet. I will be ordering more to go in all of my shoes.

JD 3 years ago

Over the years, I've bought more than 10 pairs. They felt so good in my running/tennis shoes, eventually put them in all my shoes/boots. Best cushioned insert for high/normal arches without the motion control.

Miranda Kay 3 years ago

I work out (high-impact circuit training) nearly everyday and have run a few hundred miles in them. After all this time, NO ODOR! I have a VERY high arch and these are hands-down the best insoles I have ever had. If these ever wear out.

Robert 4 years ago

I feel as if my shoe is a feather bed with the inserts. I stand longer with less pain on my feet because of the way they "cradle" them.

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