--- product_id: 2139631 title: "Polysorb Heavy Duty" brand: "spenco" price: "£40.17" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/2139631-polysorb-heavy-duty store_origin: GB region: United Kingdom --- # EVA forefoot pad for energy return 4-way stretch fabric for blister prevention 5/32 inch Spencore shock absorption layer Polysorb Heavy Duty **Brand:** spenco **Price:** £40.17 **Availability:** ✅ In Stock ## Summary > 🦶 Step into unstoppable comfort and support — because your feet deserve the best. ## Quick Answers - **What is this?** Polysorb Heavy Duty by spenco - **How much does it cost?** £40.17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/2139631-polysorb-heavy-duty) ## 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 - • **Bounce Back Energy:** EVA forefoot pad cushions every step while returning energy to power through your longest days. - • **Heel-Strike Cushioning:** Spencore heel pad softens heel impact, perfect for professionals on their feet all day. - • **Shock Absorption Mastery:** 5/32 inch Spencore layer absorbs impact, delivering our most intense comfort and protection. - • **All-Day Comfort, No Compromise:** Advanced 4-way stretch fabric keeps blisters and odor at bay, so you stay fresh and focused. - • **Targeted Support Where It Counts:** Lightweight polysorb foam cradles your arch and heel, reducing fatigue and enhancing stability. ## Overview Polysorb Heavy Duty Insoles by Spenco Medical combine multi-layer shock absorption, energy-return EVA padding, and 4-way stretch polyester fabric to deliver maximum all-day comfort and blister prevention for men's shoe sizes 12-13.5. Designed for professionals who demand lasting support and cushioning during extended periods on their feet. ## Description Insoles for workers seeking lasting comfort, cushioning and support. Provides targeted shock absorption to soften heel impact. ## Features - 100% Polyester - Spenco insoles with 4-way stretch fabric help prevent blisters while controlling odor - EVA forefoot pad provides cushioning and energy return for people who spend a lot of time on their feet - Spencore material a 5/32 inch layer of this material absorbs shock and impact to provide our most intense comfort and cushioning - Lightweight polysorb polyurethane foam provides arch and heel support - Spencore heel-strike pad provides extra cushioning and shock absorption in the heel ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B000G1IL7C | | Date First Available | August 26, 2004 | | Department | mens | | Is Discontinued By Manufacturer | No | | Item Model Number | 37-816-05 | | Manufacturer | Spenco Medical | | Product Dimensions | 12.5 x 4.31 x 0.85 inches; 5.12 ounces | ## Product Details - **Brand:** Spenco - **Color:** Green - **Material:** EVA, Spencore material, Lightweight polysorb polyurethane foam - **Product Benefits:** Arch support - **Use for:** Feet ## Images ![Polysorb Heavy Duty - Image 1](https://m.media-amazon.com/images/I/714VXc-RQ0L.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 on Reviewed in the United States 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 12-13.5I have used Spenco's gel insoles before which wore out faster and were less comfortable. ### ⭐⭐⭐⭐⭐ AWESOME! I can wear NORMAL SHOES AGAIN! *by on Reviewed in the United States August 14, 2016* I have never found an insert that actually worked well enough to say my feet 'didn't hurt'- NOW I HAVE! They do take up a decent amount of space in the shoe, so ones that aren't very deep will likely not be able to accommodate them and your feet. I actually measured my shoes: I have 'thick' feet and my shoes that were only 2.5" deep (or less) will not work, 3" or more were perfect (measured without any insole). These take up about 1/2" of insole space, I could put my shoe's original insole on top of them- but they were far more comfortable without. I was truly amazed at the width difference between the two! I was certain I needed to trim the Polysorb insoles width-wise: NO WAY. These totally provide support to the sides of your feet that most 'retail' shoes do not. (Thus the discomfort when I added the original insole for 'extra' padding- my foot was wobbling in that extra space)I have always had to wear super expensive orthopedic shoes if I was going to be on my feet for much more than a run to the grocery store or so, at least if I wanted to be able to walk the next day anyway. Much more than an hour on my feet or two miles walking and I would be in agony. I do not have fallen or high arches, and I strongly recommend anyone having foot issues either go to a Dr, or at least do the 'wet foot' test to determine your type of arch. I thought I did have arch issues since it was the arch of my foot that was KILLING me- but 'arch supports' were useless (and sometimes very painful).I have tried nearly all of the 'walking shoes' on the mainstream market (Sketchers, Nike, Reebok, etc.) and each lead to horrific pain so they sat in my closet. I promptly put these inserts in within 20 minutes of their arrival- NO PAIN whatsoever. I have not put them to the ultimate test: I work at a school so I spend 6 hours a day on hard surfaces and I walk 3-4 miles/day, but I have done enough walking to say that these make a HUGE difference: I have worn orthopedics ONCE since they arrived (and that was because I really wanted to wear sandles that day). ### ⭐⭐⭐⭐ These make my shoes and walking more comfortable! *by on Reviewed in the United States August 31, 2023* Aftermarket insoles have been a part of my life for awhile now! They are a small item that can help make me feel better, IF, they are good enough. To start off with, I have always had flat feet, am 6 feet, 3 inches and weigh about 260 lbs. So my feet and joints take a beating. The lighter the shoe and the more cushioning and support can make a serious difference throughout the day, at the end of the day and evening and even in the morning when I stand up and take my first few steps. I have tried a lot of insoles. In the past I have gone with less expensive ones, only to be disappointed with the lack of support, cushioning, stability and durability. :( So a few months back, I saw these Spenco Heavy Duty insoles. While their appearance won't overwhelm you. The materials they are made up of are pretty robust, don't compress to nothing and really provide the extra cushioning and support I really need. They are not the cheapest, nor the most expensive. They seem to have a mid position pricepoint. So considering how solid they are and longer lasting, I consider them a good value. :) I feel comfortable recommending these to others. If they can help me feel better with my particular body size, weight and feet, I think that you may benefit from these as well :) They may even allow you to walk more comfortably and thus you may add more steps to your day - which is something that can benefit a lot of us! Good luck! ## Frequently Bought Together - Spenco Polysorb Heavy Duty Maximum All Day Comfort and Support Shoe Insole Men's 12-13.5 - Spenco Polysorb Cross Trainer Athletic Cushioning Arch Support Shoe Insoles Men's 12-13.5 - Spenco Rx Comfort Thin Lightweight Cushioning Orthotic Shoe Insole, Men's 12-13.5 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/2139631-polysorb-heavy-duty](https://www.desertcart.co.uk/products/2139631-polysorb-heavy-duty) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-21*