---
product_id: 1091214
title: "In The Swim 18 x 36 Foot Rectangle Premium Pool Solar Blanket Cover 12 Mil"
brand: "in the swim"
price: "3612 kr"
currency: DKK
in_stock: true
reviews_count: 4
url: https://www.desertcart.dk/products/1091214-in-the-swim-18-x-36-foot-rectangle-premium-pool
store_origin: DK
region: Denmark
---

# Raises water temp +8-10°F Cuts evaporation & chemical loss 7-year limited warranty In The Swim 18 x 36 Foot Rectangle Premium Pool Solar Blanket Cover 12 Mil

**Brand:** in the swim
**Price:** 3612 kr
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into warmer waters and longer swim days with premium solar power!

## Quick Answers

- **What is this?** In The Swim 18 x 36 Foot Rectangle Premium Pool Solar Blanket Cover 12 Mil by in the swim
- **How much does it cost?** 3612 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/1091214-in-the-swim-18-x-36-foot-rectangle-premium-pool)

## Best For

- in the swim enthusiasts

## Why This Product

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

## Key Features

- • **Debris Defense:** Minimizes dirt and leaves entering your pool for cleaner swims
- • **Trusted Longevity:** Backed by a 7-year manufacturer’s limited warranty for peace of mind
- • **Extend Your Swim Season:** Keeps pool water comfortably warm for months longer
- • **Save Money Effortlessly:** Reduces costly water evaporation and chemical depletion
- • **Durable & Customizable Fit:** Lightweight polyethylene material easily cut to your pool’s shape

## Overview

The In The Swim 18 x 36 Foot Rectangle Premium Pool Solar Blanket Cover (12 Mil) is a durable, lightweight polyethylene solar cover designed to raise pool water temperature by 8-10°F within a week of sunlight. It reduces water evaporation, chemical loss, and debris entry, extending your swimming season while saving you money. Easy to customize for irregular pools and backed by a 7-year limited warranty, it’s the smart, cost-effective upgrade for any pool owner.

## Description

In The Swim Premium Pool Solar Blanket Cover 12 Mil is our most popular solar cover that we carry. Using a pool solar cover has many advantages that will help save you time and money. Our solar blanket covers are made from a light-weight, yet durable polyethylene material. They are easy to install by cutting the cover to the shape of your pool with scissors if it is irregularly shaped. In The Swim Premium Pool Solar Blanket Cover 12 Mil will help heat your water temperature up to 8-10 degrees in approximately 5-7 days of consistent sunlight. Using a pool solar blanket cover prevents the water from losing heat which will help let you enjoy your swim season even longer. It reduces water evaporation, chemical loss, and the amount of debris that can get in the water.

Review: Great Value - Have had this for one month. Bought for 18x36 rectangular pool to help retain heat. Good quality and thickness of plastic, super easy to roll up and remove for swimming, but would be challenging without the roller because of the size. Pool temp. increased by 10 degrees in a matter of days! Other reviews complained that the covers don’t last long, but for the price, I’m happy to replace each year or two.
Review: Good balance of quality/price ..... - It is exactly what is says it is .... one big rectangle of blue bubble wrap. I decided to write this review to share my experience, since it was pretty good. I bought the cover, stretched it over our free form pool, and then weighted the edges down around it with various patio furniture. I let it sit that way for a week to soften in the sun (which I highly recommend before cutting it, as it will stretch out slightly more). The day I put it on was a rainy, first week of May, cloud covered day here in Florida, so the pool temperature was about 78 degrees. We are all cold water wimps, so we prefer the temp up around 82 before we will swim. The day after I put the cover on the temp was 80 degrees, the day after that 82, and the third day 84. Now about 5 days later it seems to be hovering at bout 85 degrees, but we are not in the dead of summer, so no doubt it will get even warmer (though not a full "15 degrees" as some reviewers claimed, but enough that we will swim in it now sooner than we may have without the cover). Usually in the summer our pool can get up to 89-90 degrees in it's own, so I only anticipate using this cover in April/May and August/September to add a few extra months of swim time to each season. I definitely don't recommend leaving it on in summer (water gets warm enough without it) or all winter (store it for longer life), but to tack on a few extra months it is well worth it. It also came with a 7 year warranty, which is apparently not voided out if you need to cut it to size, so I would suggest getting a box cutter style razor and it cuts like butter. I stuck the razor in and simply walked the perimeter of the pool, and this thing was cut to size in under 2 minutes. **** Quick Tip: If you cut yours, try to leave enough cover to come up the sides a good 4-6 inches. I cut mine to my exact pool size, so it lays flat on the water right up to the wall all the way around, but I noticed when my in-floor cleaners kick on and the surface of the pool gets a little motion, water creeps onto the cover. Not sure if it will matter or not, but in hindsight I might have cut it a few inches larger than the pool to prevent water from getting on top of it. At $120 I am not too concerned, as if that is the case it is easy and cheap enough to order and cut another.

## Features

- Raises water temperature up to 8-10 degrees in approximately 5-7 days of consistent sunlight
- Reduces your water evaporation and chemical loss to save you money
- Reduces heat loss and minimizes the amount of debris that can get in the water
- Extends the swimming season by maintaining a comfortable swimming temperature in the pool
- 7 Year Manufacturer's Limited Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002WKJ570 |
| Best Sellers Rank | #1,922,450 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #6,113 in Pool Safety Covers |
| Customer Reviews | 4.0 4.0 out of 5 stars (956) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 36.6 pounds |
| Item model number | 1836D |
| Manufacturer | Midsol |
| Product Dimensions | 38.5 x 22 x 21 inches |

## Product Details

- **Material:** Polyethylene (PE)
- **Brand:** In The Swim
- **Product Dimensions:** 432"L x 216"W
- **Style:** Custom
- **Model Name:** Midsol

## Images

![In The Swim 18 x 36 Foot Rectangle Premium Pool Solar Blanket Cover 12 Mil - Image 1](https://m.media-amazon.com/images/I/51rIOVtwufL.jpg)
![In The Swim 18 x 36 Foot Rectangle Premium Pool Solar Blanket Cover 12 Mil - Image 2](https://m.media-amazon.com/images/I/71MdI1Bm-WL.jpg)

## Questions & Answers

**Q: can this be used to keep leaves and trash out of pool**
A: I use this cover, more to keep the pool clean than to keep it warm! We live in a very windy and hot area with lots of forest debris blowdown. I cut the cover to fit the pool well. Debris lands on the cover and, before I wind up the cover on the reel, I walk around the pool and temporarily pick up the pool cover edge to flip debris towards the center of the cover.  Then I pull the reel and cover a few feet away from the pool and hose off the section laying on the pool deck. I hose the debris to the side rather than back into the pool. Then I wind a few feet and hose again. Repeat. The amount of debris that ends up in the pool is minor compared to how dirty it would be after a wind storm! Sometimes our pool get too warm for the cover (90 degrees F is the limit) and then I have to compromise between cover life and water evaporation (we live on a limited spring water supply) and pool cleanliness.

**Q: I was thinking of getting one to save on evaporation costs (I'm in Arizona), but comments about the cover falling apart concern me.**
A: I really wouldn’t recommend this material, no matter who is selling it.  It doesn’t really do much, if anything, to heat your pool and after just a few years the plastic starts to deteriorate and leave little blue plastic discs in your filter.  The cost of makeup water due to evaporation isn’t that high anyway.  The warranty is written in such a way as to be pretty worthless.  I built a homemade solar heater that works a lot better.  If you’re not inclined to build your own, they are on the market for maybe $150 - $200.

**Q: Is it seamless?**
A: No, there is a seam, but it is attached firmly.

**Q: how do I order the 16 mil?**
A: It appears you have to order the black premium one. I don’t see the 16 mil as an option on the blue color.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Value
*by H***S on June 25, 2019*

Have had this for one month. Bought for 18x36 rectangular pool to help retain heat. Good quality and thickness of plastic, super easy to roll up and remove for swimming, but would be challenging without the roller because of the size. Pool temp. increased by 10 degrees in a matter of days! Other reviews complained that the covers don’t last long, but for the price, I’m happy to replace each year or two.

### ⭐⭐⭐⭐⭐ Good balance of quality/price .....
*by S***N on May 10, 2013*

It is exactly what is says it is .... one big rectangle of blue bubble wrap. I decided to write this review to share my experience, since it was pretty good. I bought the cover, stretched it over our free form pool, and then weighted the edges down around it with various patio furniture. I let it sit that way for a week to soften in the sun (which I highly recommend before cutting it, as it will stretch out slightly more). The day I put it on was a rainy, first week of May, cloud covered day here in Florida, so the pool temperature was about 78 degrees. We are all cold water wimps, so we prefer the temp up around 82 before we will swim. The day after I put the cover on the temp was 80 degrees, the day after that 82, and the third day 84. Now about 5 days later it seems to be hovering at bout 85 degrees, but we are not in the dead of summer, so no doubt it will get even warmer (though not a full "15 degrees" as some reviewers claimed, but enough that we will swim in it now sooner than we may have without the cover). Usually in the summer our pool can get up to 89-90 degrees in it's own, so I only anticipate using this cover in April/May and August/September to add a few extra months of swim time to each season. I definitely don't recommend leaving it on in summer (water gets warm enough without it) or all winter (store it for longer life), but to tack on a few extra months it is well worth it. It also came with a 7 year warranty, which is apparently not voided out if you need to cut it to size, so I would suggest getting a box cutter style razor and it cuts like butter. I stuck the razor in and simply walked the perimeter of the pool, and this thing was cut to size in under 2 minutes. **** Quick Tip: If you cut yours, try to leave enough cover to come up the sides a good 4-6 inches. I cut mine to my exact pool size, so it lays flat on the water right up to the wall all the way around, but I noticed when my in-floor cleaners kick on and the surface of the pool gets a little motion, water creeps onto the cover. Not sure if it will matter or not, but in hindsight I might have cut it a few inches larger than the pool to prevent water from getting on top of it. At $120 I am not too concerned, as if that is the case it is easy and cheap enough to order and cut another.

### ⭐ Extremely poor customer service, product is faulty, warranty info is misleading
*by L***N on May 28, 2019*

The first issue is that this pool cover began to disintegrate after less than 2 years of use... like not even usable. The bubbles fall off, large chunks of the cover break off when you try to pull it over the pool... it begins to sink under the surface when enough bubbles break apart, lots of plastic in your filter and pre-filter bucket, etc. My first attempt at contacting the company to start the warranty process was an email I sent through Amazon to 'In The Swim'. The reply was a one sentence email asking me to call them back on their customer service line. When I called them, they asked for a verbal description of the problem and also asked that I take some photos and send them to their customer service department. I sent them some photos and their immediate (email) response was that the warranty is denied due to sun and chemical exposure. I'd like someone to explain to me how to use a pool cover without exposing it to some sun and some chlorine... I'm super curious. Maybe I should have just left it in the box that it came in to ensure no sun or chemical exposure. Maybe it would have lasted a few years had I tried that. Note that our pool only gets sun from about 11a - 2p daily (due to several large trees that shade our backyard). Also, I don't over chlorinate the pool or shock it. Anyway, after a few more back and forth emails where I vented my displeasure, they dug in their heels and refused to honor their misleading warranty. Their email responses were very poorly written and you could tell that they were not in any way interested in what actually may have happened to the cover (like maybe I did receive a faulty cover?). There was no empathy or general care for the customer. Also, when I used to click on the "In The Swim" link (which should take you to their Amazon Seller page), they raved about their award winning customer service. Now when you click on their Amazon Seller link, you land on a completely different company's seller page... odd, but maybe inadvertent. My neighbor bought a Sun2Solar cover from Amazon and his still looks great after about 16 months (despite him leaving it outside all winter long). I'll give that one a try and would recommend that you avoid this product to save yourself from future frustration and disappointment.

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-04*