---
product_id: 87252410
title: "Pool Mate 21 ft Classic Blue Winter Pool Cover for Above Ground Pools, 4 ft Overlap (25 ft Cover Size), Solid 8 x 8 Scrim, 2.36 oz/yd2, 10-Year Warranty, Style: 3521-4PM"
brand: "pool mate"
price: "฿8607"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/87252410-pool-mate-21-ft-classic-blue-winter-pool-cover-above
store_origin: TH
region: Thailand
---

# 2.36 oz/yd² Heavy-Duty Material 8x8 Scrim Durability 10-Year Warranty Pool Mate 21 ft Classic Blue Winter Pool Cover for Above Ground Pools, 4 ft Overlap (25 ft Cover Size), Solid 8 x 8 Scrim, 2.36 oz/yd2, 10-Year Warranty, Style: 3521-4PM

**Brand:** pool mate
**Price:** ฿8607
**Availability:** ✅ In Stock

## Summary

> ❄️ Lock in winter pool protection like a pro—because your pool deserves the best cover this season!

## Quick Answers

- **What is this?** Pool Mate 21 ft Classic Blue Winter Pool Cover for Above Ground Pools, 4 ft Overlap (25 ft Cover Size), Solid 8 x 8 Scrim, 2.36 oz/yd2, 10-Year Warranty, Style: 3521-4PM by pool mate
- **How much does it cost?** ฿8607 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/87252410-pool-mate-21-ft-classic-blue-winter-pool-cover-above)

## Best For

- pool mate enthusiasts

## Why This Product

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

## Key Features

- • **Perfect Fit & Float:** Designed to float loosely on water with extra overlap for pools with large top rails—no stress, just protection.
- • **Unmatched Durability:** 18% heavier than industry standard with 8x8 scrim weave for long-lasting winter protection.
- • **Effortless Installation:** 4 ft overlap + included winch & cable make setup a breeze, even in windy conditions.
- • **Ultimate Weather Shield:** Solid polyethylene cover blocks water, snow, and ice to keep your pool pristine all offseason.
- • **Trusted Expertise Since 1999:** Backed by over 25 years of pool care innovation and a best-in-class 10-year warranty.

## Overview

The Pool Mate 21 ft Classic Blue Winter Pool Cover is a premium, solid polyethylene cover designed for above ground pools. Featuring a heavy-duty 2.36 oz/yd² material with an 8x8 scrim weave, it offers superior durability and weather resistance. Its 4 ft overlap and included winch and cable simplify installation, while the 10-year warranty guarantees long-term reliability. Engineered to block water, snow, and ice, this cover ensures your pool stays protected throughout the winter season.

## Description

The Pool Mate Heavy-Duty Blue Winter Pool Cover will protect your pool from winter elements. This is a solid winter pool cover that will not allow water to pass through its material. The Pool Mate Heavy-Duty Blue Winter Pool Covers is constructed of heavy-duty polyethylene. All seams are heat sealed for better performance. The blue topside of this pool cover is coated to prevent UV damage. Please order by your pool size, as the overlap goes beyond the pool size listed. This cover includes a four-foot overlap. If you have a very large top rail, please consider a larger pool size. This cover should be able to comfortably float on the pool water without excessive stress. This cover is not meant to be used as a debris cover during the swimming season. This winter pool cover is intended to be used during the off-season. This cover is meant for traditional above ground pools with a traditional top rail. Includes a winch and cable that should be used to secure your pool cover through the grommets around the perimeter of the pool cover. For extra securing, cover clips and cover wrap (both sold separately) are suggested for pool closing. No other method of installation is recommended..

## Features

- Classic winter pool cover for 21 ft. round pools. This pool cover has a 4 foot overlap, which is the material included beyond the pool size, making this pool cover easier to install. Since 1999 Pool Mate has been offering the best pool covers for pool owners. This cover has twice as much overlap as other brands, making it the easiest pool cover to install. Including overlap, the cover size is: 25 feet. Includes winch and cable for easy installation.
- This Classic pool cover is constructed with classic polyethylene that weighs 2.36 ounces per square yard (80 grams per square meter). The material is woven with a 8 x 8 scrim. Scrim is the number of threads per square inch. Material weight and scrim are the best indicators of the overall durability and expected longevity of your pool cover.
- With over 25 years of experience, Pool Mate has designed this Classic winter pool cover with an exceptional focus on quality for this season and years to come. Constructed 18% heavier than industry standard. Backed by a 10-Year Warranty that is the best in the industry. We are real swimming pool experts that are here to help with all of your swimming pool needs.
- This is a solid winter pool cover that will not allow water to pass through. Pool Mate has been providing better pool products since 1999. This season choose to close your pool with Pool Mate.
- This pool cover will protect your pool from winter elements throughout the offseason. Designed for superior protection against snow and ice.
- Use the included winch and cable to secure the cover through the grommets. This pool cover is designed for optimal performance in high wind areas.
- For pools with decks, install on top of the deck using vinyl water weights, placing them on top of the cover. For pool with partial decks, use water weights on the deck and use the winch and cable around the perimeter running the cable under the deck if possible.
- Cover should be able to float loosely on the water, consider going up a pool size if you have large top rails.
- Ice equalizer pillow sold separately

## Product Details

- **Size:** 25' (Round)
- **Color:** Blue
- **Material:** Polyethylene (PE)
- **Brand:** Pool Mate
- **Product Dimensions:** 25"L x 25"W

## Images

![Pool Mate 21 ft Classic Blue Winter Pool Cover for Above Ground Pools, 4 ft Overlap (25 ft Cover Size), Solid 8 x 8 Scrim, 2.36 oz/yd2, 10-Year Warranty, Style: 3521-4PM - Image 1](https://m.media-amazon.com/images/I/51CRpPlB9CL.jpg)
![Pool Mate 21 ft Classic Blue Winter Pool Cover for Above Ground Pools, 4 ft Overlap (25 ft Cover Size), Solid 8 x 8 Scrim, 2.36 oz/yd2, 10-Year Warranty, Style: 3521-4PM - Image 2](https://m.media-amazon.com/images/I/61qC1HnSJdL.jpg)
![Pool Mate 21 ft Classic Blue Winter Pool Cover for Above Ground Pools, 4 ft Overlap (25 ft Cover Size), Solid 8 x 8 Scrim, 2.36 oz/yd2, 10-Year Warranty, Style: 3521-4PM - Image 3](https://m.media-amazon.com/images/I/61ofiG4j7FL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great cover
*by M***N on August 29, 2025*

Great cover for my pool. Unfortunately the price has doubled in the last couple of years.

### ⭐⭐⭐⭐⭐ Terrible Experience
*by J***N on December 1, 2020*

The tarp lasted less than two months before tearing. Manufacturer said it’s normal wear and tear due to being in the open. Don’t waste your money on a company with such poor customer service and value.

### ⭐⭐⭐⭐ Quality issue- now resolved
*by C***N on September 2, 2025*

We didn’t notice that we had a defective eyelet until it was already on the pool. Waiting to see if the warranty department will help us. I will update my review if they fix the problem.UPDATE- The manufacturer is replacing it. Great customer service!

---

## 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.th/products/87252410-pool-mate-21-ft-classic-blue-winter-pool-cover-above](https://www.desertcart.co.th/products/87252410-pool-mate-21-ft-classic-blue-winter-pool-cover-above)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-23*