---
product_id: 1950374
title: "PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes"
brand: "spenco"
price: "€ 64.96"
currency: EUR
in_stock: true
reviews_count: 13
category: "Spenco"
url: https://www.desertcart.fi/products/1950374-polysorb-heavy-duty-insoles-performance-foam-shoe-inserts-w-4
store_origin: FI
region: Finland
---

# 4-way stretch fabric Heel-to-toe cushioning Shock absorption layer PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes

**Brand:** spenco
**Price:** € 64.96
**Availability:** ✅ In Stock

## Summary

> 🦶 Step up your comfort game — because your feet deserve the best!

## Quick Answers

- **What is this?** PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes by spenco
- **How much does it cost?** € 64.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/1950374-polysorb-heavy-duty-insoles-performance-foam-shoe-inserts-w-4)

## Best For

- spenco enthusiasts

## Why This Product

- Trusted spenco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extra Thick Heel Pad:** All-day heel comfort designed for long hours on your feet.
- • **Optimized Stride Support:** Big toe cut-out and first ray drop zone promote a natural, efficient stride.
- • **Feather-light POLYSORB Foam:** Experience unmatched full-foot support without the bulk.
- • **Patented SpenCore Shock Layer:** Advanced impact absorption keeps joints and muscles energized all day.
- • **Odor-Control Silpure Top Cloth:** Stay fresh and blister-free with low-friction, antimicrobial fabric.

## Overview

Spenco PolySorb Heavy Duty Insoles combine lightweight POLYSORB polyurethane foam with a patented SpenCore shock-absorbing layer and a 4-way stretch, odor-controlling fabric to deliver superior heel-to-toe cushioning, stability, and all-day comfort. Designed to reduce foot fatigue, prevent blisters, and promote a healthier stride, these insoles fit most shoes and are ideal for professionals who demand lasting support during long workdays or active lifestyles.

## Description

Say goodbye to foot fatigue, discomfort, and blisters, and step into a world of lasting comfort and stability with Spenco POLYSORB Heavy Duty Insoles—your go-to solution for all-day foot comfort and support.Engineered with lightweight POLYSORB Polyurethane Foam, these performance insoles offer the heel-to-toe cushioning and support preferred by consumers over shoe insoles with rigid arch support systems.The 5/32-inch SpenCoreMaterial layer and Heel-strike Pad absorbs shocks and impacts, keeping your lower body comfortable and primed for action, making these shoe and boot insoles perfect for work, running, hiking, walking, or standing all day.The precision heel cup controls and supports the initial foot-strike,providing essential stability during any activity.Crafted with a low-friction Silpure-treated top cloth and 4-way stretch fabric, these Spenco insoles conform to the contours of the foot to help reduce friction, prevent blisters, and keep your feet fresh and odor-free.The big toe cut-out and first ray drop zone promote efficient toe-off and a healthier stride, allowing your foot to function more naturally.Designed to fit the entire last of your shoe, these full-length insoles ensure end-to-end comfort and support, and are unconditionally guaranteed for one year. Treat your feet to the best insole technology on the market.

Review: Repeat user of these - These are the best insole i've used. I'm a big dude, about 300 lbs. They make my boots comfortable. The insoles lasted for about 6-8 months in my daily wear work shoes before i could tell they were not as supportive any more (my foot, ankle, knee, and back pain started to come back). The pains cleared up in a couple days. Easy to trim. I had a prior insole to copy and they fit perfect. The sizing seems spot on, but i'm at the smaller end of this insole so i have to trim a fair bit. Size 12-13.5 I have used Spenco's gel insoles before which wore out faster and were less comfortable.
Review: Great insert for planter fascititis - Great insert to use if you struggle with planter fascititis. They have great support and can be interchanged between shoes. Great price to ensure comfort while wearing shoes.

## Features

- Nylon
- COMPLETE FOOT SUPPORT: Constructed of feather-light POLYSORB Polyurethane Foam, these heavy-duty performance insoles provide unmatched heel-to-toe cushioning and support.
- FEELS GREAT UNDERFOOT: Patented SpenCore material layer provides advanced shock and impact absorption for superior cushioning to keep joints and muscles comfortable and working at their best.
- ALL-DAY HEEL COMFORT: Extra thick heel pad offers additional cushioning in the heel for extra comfort for standing on feet all-day.
- OPTIMAL HEAL SUPPORT: Deep heel cup controls and supports the initial foot-strike while the Forefoot Crash Pad reduces pressure for all-day stability and comfort throughout any activity.
- PREVENTS BLISTERS, CONTROLS ODORS: Low-friction Silpure-treated top cloth helps control odors, keeping your feet fresh and blister-free, while the adaptable 4-way stretch material conforms to your foot's contours, enhancing cushioning and comfort.
- OPTIMIZED STRIDE SUPPORT: Enhance your stride with a big toe cut-out for efficient toe-off, a First Ray Drop Zone promoting a healthier stride, and full-length coverage ensuring customized heel-to-toe comfort and support in every step.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B000G1IL7M |
| Best Sellers Rank | #15,653 in Health & Household ( See Top 100 in Health & Household ) #85 in Shoe Insoles #1,452 in Sales & Deals |
| Customer Reviews | 4.4 4.4 out of 5 stars (6,822) |
| Date First Available  | August 26, 2004 |
| Department  | Unisex |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 37-816-04 |
| Manufacturer  | Spenco Medical |
| Product Dimensions  | 11.75 x 4.19 x 0.81 inches; 4 ounces |

## Product Details

- **Brand:** Spenco
- **Color:** Green
- **Material:** Neoprene, Nylon
- **Product Benefits:** Arch support
- **Use for:** Foot, Heel

## Images

![PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes - Image 1](https://m.media-amazon.com/images/I/6135UE8zpuL.jpg)
![PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes - Image 2](https://m.media-amazon.com/images/I/71so87eN1wL.jpg)
![PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes - Image 3](https://m.media-amazon.com/images/I/81++iYrQebL.jpg)
![PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes - Image 4](https://m.media-amazon.com/images/I/81H++7OWf8L.jpg)
![PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes - Image 5](https://m.media-amazon.com/images/I/81MmEkRXeNL.jpg)

## Available Options

This product comes in different **Pattern, Size, Style** options.

## Questions & Answers

**Q: What sizes are the Polysorb Heavy Duty Insoles available in?**
A: The Polysorb Heavy Duty Insoles come in 6 sizes, which range from a women's 5 to a men's 15.5.

**Q: How much does the Polysorb Heavy Duty Insole weigh?**
A: The Polysorb Heavy Duty Insole weighs only 0.35 lbs.

**Q: What shoe types are the Polysorb Heavy Duty Insole designed for?**
A: Use the Polysorb Heavy Duty Insole with a large range of closed-toe shoes: running, walking, sport-specific, working, and boots.

**Q: What conditions do the Polysorb Heavy Duty Insole fight against?**
A: The Polysorb Heavy Duty Insole prevents: Plantar Fasciitis, Over Pronation, Flat Feet/Arch Support, Morton's Neuroma/Ball-of-Foot, Pain, Hammer Toe, Heel Spurs/Heel Pain

**Q: What are the materials used in the Polysorb Heavy Duty Insole?**
A: Fabric 15%, Pu 35%, Neoprene 35%, Sbr 15%

## Customer Reviews

### ⭐⭐⭐⭐⭐ Repeat user of these
*by J***E on September 30, 2025*

These are the best insole i've used. I'm a big dude, about 300 lbs. They make my boots comfortable. The insoles lasted for about 6-8 months in my daily wear work shoes before i could tell they were not as supportive any more (my foot, ankle, knee, and back pain started to come back). The pains cleared up in a couple days. Easy to trim. I had a prior insole to copy and they fit perfect. The sizing seems spot on, but i'm at the smaller end of this insole so i have to trim a fair bit. Size 12-13.5 I have used Spenco's gel insoles before which wore out faster and were less comfortable.

### ⭐⭐⭐⭐⭐ Great insert for planter fascititis
*by A***E on December 30, 2025*

Great insert to use if you struggle with planter fascititis. They have great support and can be interchanged between shoes. Great price to ensure comfort while wearing shoes.

### ⭐⭐⭐⭐⭐ Excellent quality
*by M***S on January 18, 2026*

This is a wonderful product that was first known to me by my Orthopedist 14 years ago and I am still wearing them. Great quality, extra cushioning in the heels, easy to cut and adjust to size and easy to wear in most shoes. Spenco is Microcellular Rubber which is incredibly durable. These last me a long time, but I buy more so I don't have to constantly change them from shoe to shoe. I would highly recommend this product to anyone with foot pain.

## Frequently Bought Together

- Spenco PolySorb Heavy Duty Insoles - Performance Foam Shoe Inserts w/ 4-Way Stretch Fabric & SpenCore Layer for Shock Absorption, Odor Control & All-Day Comfort & Stability - Fits Most Shoes
- Spenco Polysorb Cross Trainer Athletic Cushioning Arch Support Shoe Insoles, Green, Women's 11-12.5/Men's 10-11.5
- Spenco Rx Comfort Thin Lightweight Cushioning Orthotic Shoe Insole, Women's 11-12.5/Men's 10-11.5

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-09*