---
product_id: 37490185
title: "Lucid 4 Inch Memory Foam Mattress Topper, King Size – Cooling Gel Bed Topper – Preassure-Relieving Ultra Plush Feel – Ventilated Breathable Design – CertiPur Certified - Dorm Room Essentials"
brand: "lucid"
price: "€ 1267.86"
currency: EUR
in_stock: true
reviews_count: 13
category: "Lucid"
url: https://www.desertcart.hr/products/37490185-lucid-4-inch-memory-foam-mattress-topper-king-size-cooling
store_origin: HR
region: Croatia
---

# Cooling gel infusion + ventilation 4-inch ultra plush memory foam 3-year CertiPUR-US warranty Lucid 4 Inch Memory Foam Mattress Topper, King Size – Cooling Gel Bed Topper – Preassure-Relieving Ultra Plush Feel – Ventilated Breathable Design – CertiPur Certified - Dorm Room Essentials

**Brand:** lucid
**Price:** € 1267.86
**Availability:** ✅ In Stock

## Summary

> 🛌 Elevate your sleep game — because your mattress deserves a glow-up!

## Quick Answers

- **What is this?** Lucid 4 Inch Memory Foam Mattress Topper, King Size – Cooling Gel Bed Topper – Preassure-Relieving Ultra Plush Feel – Ventilated Breathable Design – CertiPur Certified - Dorm Room Essentials by lucid
- **How much does it cost?** € 1267.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/37490185-lucid-4-inch-memory-foam-mattress-topper-king-size-cooling)

## Best For

- lucid enthusiasts

## Why This Product

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

## Key Features

- • **Cloud-like Comfort:** 4 inches of plush memory foam that contours perfectly to your body for pressure relief and deep relaxation.
- • **Effortless Upgrade:** Transforms any mattress into a luxurious sleep surface without the hassle of buying a new bed.
- • **Stay Cool All Night:** Advanced cooling gel and precision-cut ventilation channels ensure breathable, temperature-regulated sleep.
- • **Convenient & Ready to Use:** Compressed and shipped in a box; simply unroll and let it decompress within 48 hours for full plushness.
- • **Certified Quality & Durability:** Made with CertiPUR-US certified foam and backed by a 3-year warranty for peace of mind.

## Overview

The LUCID 4 Inch Memory Foam Mattress Topper is a king-size, ultra-plush gel-infused topper designed to enhance mattress comfort by providing pressure relief and cooling airflow. Featuring CertiPUR-US certified foam and a ventilated design, it offers a breathable, temperature-regulated sleep experience. Shipped compressed for convenience, it expands to a cloud-like softness within 48 hours and is backed by a 3-year warranty, making it an essential upgrade for dorm rooms or any bedroom seeking premium comfort.

## Description

The LUCID 4 Inch Gel Memory Foam Mattress Topper adds new life to and enhances the comfort of an existing mattress. LUCID's thickest mattress topper, this ultra thick comfort layer is made of plush, gel-infused memory foam for supreme comfort. LUCID memory foam compresses evenly beneath the unique weight and shape of a body, conforming to curves to provide comfort. Top quality foam is infused with advanced gel material that captures and distributes heat for a more comfortable sleep temperature. Mattress topper has a ventilated design that improves breathability for refreshing sleep.

Review: Comfort - I’ve been really impressed with this 4-inch memory foam topper. It completely transformed my bed and made it feel so much more comfortable and supportive without having to replace my mattress. The foam is thick and has that perfect balance of softness and support. When you lie down, it slowly molds to your body and feels like you’re sinking into a cloud that gently hugs you in all the right places. It really helps relieve pressure, especially on my shoulders and hips. What I also love is that it doesn’t feel too hot or overly stiff—it stays comfortable through the night and keeps its shape well after use. Every time I get into bed, it feels like an upgrade in sleep quality. Overall, this memory foam topper makes a huge difference. It turns an average mattress into something soft, cozy, and truly relaxing to sleep on.
Review: Loved this mattress topper - I purchased the queen sized lavender 3" topper for reference. I bought this item to go on top of our more firm memory foam camper mattress. It is very soft and if it is placed on a hard mattress you may be able to feel the harder mattress below over time, but this topper is still incredible. I also used this on my everyday sleeping mattress and it was a dream! So, I am going to buy another one for my room now. DO NOT force the topper open, let it expand on its own time. If you force it open before it starts to fluff up you may damage the topper, rips in the seams etc.. Mine took about 45 minutes to fluff up before I laid it flat. I put it on my bed and walked away and came back to the room about 45 minutes later and it looked fluffed up. That's when I laid it flat and I let it lay out on my bed all day, that night, and the next day before sleeping on it as well. I used it on my bed for one night before I moved it from inside my house to my camper and put it on the bed, put a mattress protector over it and then put my regular sheets on the bed. I moved it into my camper and put it on my memory foam mattress that is rather firm. This topper isn't very dense so you will pretty much feel the softness immediately when you lay down on it and your body will make an impression. I am 130#'s and my husband is 180#'s, we both slept very well on it during the month we used it out on our adventures. My husband absolutely loves this topper and wants another one for our bedroom. I had a traumatic back injury 10 years ago and I also agree to how comfortable this topper can make your bed. I did feel that after about 8 hours of laying on it during the night (I am a side sleeper) I could feel the mattress below it, but I also think this is because we have an old firm memory foam mattress in our camper. I knew when I purchased it that it wouldn't alleviate that, but I was hoping it would help make it more comfortable and I was right! When I used it in my bedroom I didn't feel the mattress below and I slept in for the first time in years! I'm so happy with my purchase that I am purchasing a second one! PROS: I really like the smell of the topper, it is pretty strong when you first open it, but it goes away within a couple of hours. Now I only smell it if my face is by the topper and it is a very pleasant smell. It helps firmer mattresses become softer and more comfortable. It is a dream on my bedroom mattress that is a hybrid (springs and memory foam on top). It is light weight and I can move it around to different beds if I want by myself. It is exactly the size of my queen mattresses, the same thickness all over, and I didn't have any issues with it moving around and I think this is because I put my mattress protector over it and then my sheets. CONS: The wait for it to be useable is hard because I am an impatient person. It did move around on the bed until I put it under my mattress protector. The smell is pretty strong when you first open the box, but it dissipates in a few hours time. Not sure if this is 100% the toppers fault, but I feel like it makes me sleep hotter during the night and I like to sleep on the cooler side. Overall, I would recommend this to anyone that is looking to add some extra comfort to their mattress whether it is new or used.

## Features

- Memory Foam
- ULTRA PLUSH FEEL – Lucid memory foam mattress toppers are designed to enhance a mattress, making your sleep experience softer; four inches of plush memory foam feels light, airy, and responsive
- COOLER SLEEP: Cooling gel is infused in the memory foam to help regulate your sleep temperature and keep you comfortable all night long; precision-cut ventilation channels help increase airflow to keep you cooler
- CHOOSE YOUR SIZE: 2-inch profile adds a soft layer of support to any mattress; 3-inch profile is very plush and adds even more comfort; 4-inch profile has an extra deep, plush, sink-in feel
- 3-YEAR WARRANTY: This mattress topper is assembled with CertiPUR-US certified foam and backed by a 3-year limited warranty; use with a waterproof mattress protector for best results
- SHIPS IN A BOX: Mattress topper is compressed and shipped in a box for ultimate convenience; when it arrives, simply unroll it and allow 24-48 hours to fully decompress

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N1NV1HZ |
| Age Range Description | Adult |
| Best Sellers Rank | #2,272 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #9 in Mattresses Toppers |
| Brand | LUCID |
| Brand Name | LUCID |
| Closure Type | Pull On |
| Color | Blue Gel |
| Customer Reviews | 4.4 out of 5 stars 103,690 Reviews |
| Fabric Type | Memory Foam |
| Global Trade Identification Number | 00848971052044 |
| Included Components | Mattress Topper |
| Item Firmness Description | Extra Plush |
| Item Type Name | 4 Inch Gel Memory Foam Mattress Topper - Ventilated Design - Ultra Plush - King |
| Item Weight | 27 Pounds |
| Manufacturer | LUCID |
| Manufacturer Part Number | LU40KK30GT |
| Manufacturer Warranty Description | 3-year warranty against manufacturer's defects. |
| Material Type | Memory Foam |
| Model Name | LUCID 4 Inch Gel Memory Foam Mattress Topper-Ventilated Design-Ultra Plush-King |
| Model Number | LU40KK30GT |
| Number of Items | 1 |
| Other Special Features of the Product | Gel Memory Foam |
| Product Care Instructions | Hand Wash Only |
| Size | King |
| Special Feature | Gel Memory Foam |
| UPC | 848971052044 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** LUCID
- **Color:** Blue
- **Fabric Type:** Memory Foam
- **Size:** King
- **Special Feature:** Gel Memory Foam

## Images

![Lucid 4 Inch Memory Foam Mattress Topper, King Size – Cooling Gel Bed Topper – Preassure-Relieving Ultra Plush Feel – Ventilated Breathable Design – CertiPur Certified - Dorm Room Essentials - Image 1](https://m.media-amazon.com/images/I/81HjsYKEm9L.jpg)

## Available Options

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

## Questions & Answers

**Q: Why should I get a topper?**
A: Whenever your mattress is ready for a refresh, but your wallet isn’t, it’s time for a topper. Or if you wish your mattress is softer, or if you are in a dorm or renting—a topper is a great solution! Upgrade your bed without the hassle.

**Q: Will my topper come in a box?**
A: Yes! We make it easy. Lucid memory foam toppers come compressed and rolled in a box, are easy to move, and set up in seconds. Just unbox it and let it decompress for 24 to 72 hours before sleeping on it.

**Q: What are the benefits of gel infusions?**
A: Gel infusions in memory foam help regulate temperature, so it sleeps cooler than traditional memory foam.

**Q: What height topper should I get?**
A: The 2-inch profile adds a soft layer of support to your mattress. The 3-inch profile is very plush and adds even more comfort. The 4-inch profile is almost like a mini mattress, with an extra deep, plush, sink-in feel.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Comfort
*by N***S on May 22, 2026*

I’ve been really impressed with this 4-inch memory foam topper. It completely transformed my bed and made it feel so much more comfortable and supportive without having to replace my mattress. The foam is thick and has that perfect balance of softness and support. When you lie down, it slowly molds to your body and feels like you’re sinking into a cloud that gently hugs you in all the right places. It really helps relieve pressure, especially on my shoulders and hips. What I also love is that it doesn’t feel too hot or overly stiff—it stays comfortable through the night and keeps its shape well after use. Every time I get into bed, it feels like an upgrade in sleep quality. Overall, this memory foam topper makes a huge difference. It turns an average mattress into something soft, cozy, and truly relaxing to sleep on.

### ⭐⭐⭐⭐⭐ Loved this mattress topper
*by C***R on September 2, 2019*

I purchased the queen sized lavender 3" topper for reference. I bought this item to go on top of our more firm memory foam camper mattress. It is very soft and if it is placed on a hard mattress you may be able to feel the harder mattress below over time, but this topper is still incredible. I also used this on my everyday sleeping mattress and it was a dream! So, I am going to buy another one for my room now. DO NOT force the topper open, let it expand on its own time. If you force it open before it starts to fluff up you may damage the topper, rips in the seams etc.. Mine took about 45 minutes to fluff up before I laid it flat. I put it on my bed and walked away and came back to the room about 45 minutes later and it looked fluffed up. That's when I laid it flat and I let it lay out on my bed all day, that night, and the next day before sleeping on it as well. I used it on my bed for one night before I moved it from inside my house to my camper and put it on the bed, put a mattress protector over it and then put my regular sheets on the bed. I moved it into my camper and put it on my memory foam mattress that is rather firm. This topper isn't very dense so you will pretty much feel the softness immediately when you lay down on it and your body will make an impression. I am 130#'s and my husband is 180#'s, we both slept very well on it during the month we used it out on our adventures. My husband absolutely loves this topper and wants another one for our bedroom. I had a traumatic back injury 10 years ago and I also agree to how comfortable this topper can make your bed. I did feel that after about 8 hours of laying on it during the night (I am a side sleeper) I could feel the mattress below it, but I also think this is because we have an old firm memory foam mattress in our camper. I knew when I purchased it that it wouldn't alleviate that, but I was hoping it would help make it more comfortable and I was right! When I used it in my bedroom I didn't feel the mattress below and I slept in for the first time in years! I'm so happy with my purchase that I am purchasing a second one! PROS: I really like the smell of the topper, it is pretty strong when you first open it, but it goes away within a couple of hours. Now I only smell it if my face is by the topper and it is a very pleasant smell. It helps firmer mattresses become softer and more comfortable. It is a dream on my bedroom mattress that is a hybrid (springs and memory foam on top). It is light weight and I can move it around to different beds if I want by myself. It is exactly the size of my queen mattresses, the same thickness all over, and I didn't have any issues with it moving around and I think this is because I put my mattress protector over it and then my sheets. CONS: The wait for it to be useable is hard because I am an impatient person. It did move around on the bed until I put it under my mattress protector. The smell is pretty strong when you first open the box, but it dissipates in a few hours time. Not sure if this is 100% the toppers fault, but I feel like it makes me sleep hotter during the night and I like to sleep on the cooler side. Overall, I would recommend this to anyone that is looking to add some extra comfort to their mattress whether it is new or used.

### ⭐⭐⭐⭐ Good product, good night's sleep, good value, and poodle approved!
*by J***R on November 24, 2019*

About 14 years ago, we purchased a queen-size memory foam mattress (from Costco). It was our first time using a memory foam mattress, and we liked it a lot. Our next home came furnished with a new king bed, so we bought a 2-inch down-alternative mattress topper. It was inexpensive and adequately comfortable. Our home after that came with two new twin XL mattresses on a common frame (comprising an inexpensive equivalence to a king bed). We continued using our 2-inch down-alternative mattress topper. It finally became lumpy, so it was time to get something new. We saw the Lucid 4-inch memory foam topper and decided to give it a try. We find it to be a good product, providing comfort similar to an entire memory foam mattress (like the one we had originally). This topper even fills the small gap between the two twin mattresses, so that it feels like an actual king mattress. The topper is packaged well, and expanded to its full size in about 36 hours. At that time, the slight odor was gone too. We enclosed the mattresses and the topper in a basic mattress pad, and then put on the bed sheet. Inside a mattress pad and covered by a bed sheet, the topper is a bit less pliant than it is when uncovered, so it feels somewhat less cushy than it does on its own. You may or may not notice the difference, but that's purely subjective. We did not find the difference to be objectionable. Since this product is made in China, I was concerned about the chemical composition of the gas that the mattress gives off when it is new. The reason for my concern about this stems from contaminated Chinese drywall that was used in many homes in my area that were built between 2006 and 2008. The drywall gave off toxic gasses that caused health problems, and caused serious deterioration of copper, thus ruining wiring, air conditioning systems, and jewelry! I contacted Lucid customer support to inquire about this. They assured me that the gas given off by the mattress is harmless, but they were unable (or unwilling) to tell me the chemical composition of the gas. We paid $112.49 for the mattress, but less than a week later, Amazon was selling it for $89.99. At $112.49, this mattress topper is a good value. At $89.99, it's a steal! (By the way, if you do not like the topper and want to return it, keep in mind that after it expands to its full size, the topper will not even come close to fitting in the box in which it came.) Finally, our standard poodle agrees that this topper provides good bedtime comfort, and he approves, as shown in the photo!

## Frequently Bought Together

- LUCID 4 Inch Gel Memory Foam Mattress Topper, Ventilated Design, Ultra Plush, CertiPUR-US Certified, King, Blue
- Lucid 4 Inch Mattress Topper Cover King – Cover For Mattress Topper - Mattress Topper Cover with Zipper – Twin Mattress Cover - Cover Only
- SafeRest 100% Waterproof King Size Mattress Protector - Fitted with Stretchable Pockets - Machine Washable Cotton Mattress Cover for Bed

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-20*