---
product_id: 37397025
title: "Lucid 4 Inch Memory Foam Mattress Topper, Twin XL Size – Cooling Gel Bed Topper – Preassure-Relieving Ultra Plush Feel – Ventilated Breathable Design – CertiPur Certified - Dorm Room Essentials"
brand: "lucid"
price: "€ 910.98"
currency: EUR
in_stock: true
reviews_count: 13
category: "Lucid"
url: https://www.desertcart.hr/products/37397025-lucid-4-inch-memory-foam-mattress-topper-twin-xl-size
store_origin: HR
region: Croatia
---

# Cooling gel infusion for temperature control Ventilated design boosts airflow 4-inch ultra plush memory foam Lucid 4 Inch Memory Foam Mattress Topper, Twin XL Size – Cooling Gel Bed Topper – Preassure-Relieving Ultra Plush Feel – Ventilated Breathable Design – CertiPur Certified - Dorm Room Essentials

**Brand:** lucid
**Price:** € 910.98
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Lucid 4 Inch Memory Foam Mattress Topper, Twin XL 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?** € 910.98 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/37397025-lucid-4-inch-memory-foam-mattress-topper-twin-xl-size)

## 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

- • **Effortless Setup:** Ships compressed in a box—just unroll and watch it expand to full comfort within 48 hours.
- • **Cloud-like Comfort:** Sink into 4 inches of ultra-plush memory foam that adapts perfectly to your body’s curves for pressure relief.
- • **Stay Cool All Night:** Gel-infused foam combined with precision-cut ventilation channels ensures a cooler, sweat-free sleep experience.
- • **Dorm & Beyond Essential:** Perfect Twin XL size tailored for dorm rooms or any space craving an instant mattress upgrade.
- • **Durability You Can Trust:** Crafted with CertiPUR-US certified foam and backed by a 3-year warranty for long-lasting comfort.

## Overview

The LUCID 4 Inch Memory Foam Mattress Topper in Twin XL size transforms any mattress with its ultra-plush, gel-infused memory foam layer. Designed for pressure relief and enhanced airflow, it keeps you cool and comfortable all night. Certified by CertiPUR-US and backed by a 3-year warranty, this ventilated topper ships compressed for easy setup, making it a must-have dorm room essential or a smart upgrade for any bed.

## 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 relieve pressure at the shoulders and hips. 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: So comfortable! - So comfortable. A slight smell when I opened it but that went away quickly. Laid it out on the bed at like 8am and left it all day and have been sleeping on it for about a month now. We got the 4inch blue king, seriously like sinking into a cloud. My husband and I both fall asleep so fast, stay asleep better and have less aches. Its on top of a very firm hybrid mattress. It not as cooling as I thought but it is cooler than my mattress. Worth the money in my opinion.
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.

## 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 | B01MYVATSJ |
| Age Range Description | Adult |
| Best Sellers Rank | #1,135 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 | 4.3 out of 5 stars 32,428 Reviews |
| Fabric Type | Memory Foam |
| Global Trade Identification Number | 00848971052075 |
| Included Components | Mattress Topper |
| Item Firmness Description | Soft |
| Item Type Name | 4 Inch Gel Memory Foam Mattress Topper - Ventilated Design - Ultra Plush - Twin XL |
| Manufacturer | LUCID |
| Manufacturer Part Number | LU40TX30GT |
| Manufacturer Warranty Description | 3-year warranty against manufacturer's defects. |
| Material Type | Memory Foam |
| Model Name | LU40TX30GT |
| Model Number | LU40TX30GT |
| Number of Items | 1 |
| Other Special Features of the Product | Gel Memory Foam |
| Product Care Instructions | Spot Clean Only |
| Size | Twin XL |
| Special Feature | Gel Memory Foam |
| Thread Count | 400 |
| UPC | 848971052075 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Not Water Resistant |

## Product Details

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

## Images

![Lucid 4 Inch Memory Foam Mattress Topper, Twin XL 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: What does the cooling gel infusion do, and will it keep my mattress cooler?**
A: Cooling gel is blended into the foam to help draw heat away from your body and regulate sleep temperature. The open-cell foam structure and ventilation channels also promote airflow for a cooler sleep experience than traditional memory foam.

**Q: Is there an odor when it arrives, and how long until I can sleep on it?**
A: A mild new-foam scent is normal and fades quickly. Unroll in a ventilated room for 24–48 hours. By the time it fully expands, the smell should be gone.

**Q: Will my current sheets still fit?**
A: Measure your mattress plus your topper height before ordering sheets to ensure a snug fit. The added height may require deep-pocket sheets (15"+ depth).

**Q: Which thickness is right for me — 2", 3", or 4"?**
A: The 2" adds subtle softness to a slightly firm mattress. The 3" delivers deeper pressure relief for back and side sleepers. The 4" is ultra-plush, ideal for very firm or worn mattresses.

**Q: Can I wash this topper?**
A: The foam can't be machine washed. Spot clean with mild detergent and a damp cloth. We recommend pairing it with a waterproof mattress protector to keep it fresh long-term.

## Customer Reviews

### ⭐⭐⭐⭐⭐ So comfortable!
*by K***Y on June 20, 2026*

So comfortable. A slight smell when I opened it but that went away quickly. Laid it out on the bed at like 8am and left it all day and have been sleeping on it for about a month now. We got the 4inch blue king, seriously like sinking into a cloud. My husband and I both fall asleep so fast, stay asleep better and have less aches. Its on top of a very firm hybrid mattress. It not as cooling as I thought but it is cooler than my mattress. Worth the money in my opinion.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ The review to trust - this is the best memory foam topper on the market.
*by A***R on January 26, 2022*

Let me start off by saying this isn't a paid review. Memory foam's quality isn't just reliant on density. The measure of density of memory foam gives it a Ultra Plush/Plush/Medium Plush/Medium/Medium Firm/Firm/Extra Firm feel. In order for memory foam to BE plush, it has to be low density. The reason Tempur-Pedic doesn't offer low density memory foam (Tempur-ES 4.1 LB Foam & Original Tempur 5.3 LB Foam) is because they distinguish themselves that way. I've used Tempur-Topper Supreme (3" Tempur Original 5.3LB Memory Foam), and it's super high quality, but that Topper is meant for people who like firm mattresses, and I can say the same thing about the 3" Tempur-ES Memory Foam. I've flipped between this memory foam topper, and a Tempur-ES topper. The Tempur-ES is nice, and you can move around easier, but I never feel like I'm being cushioned and like I'm relaxed. You sink in to the Lucid 4" topper, and my body physically relaxes, and I feel cushioned. I wouldn't even go as far to say the Lucid 4" topper is plush, but in order to be a comfortable foam, you will have to sink in quite a bit, or else you're just laying on expensive concrete. Memory Foam is meant to be inexpensive - Memory Foam is cheap to make as they're basically just made of fossil fuels. Don't judge this topper by the price. I first tried a 3" Memory Foam Topper here on Amazon, since the topper had like a 4.9/5 on 100+ reviews, but I don't think that topper was memory foam, and was just basic polyurethane foam. The memory foam had no squishy feeling, and the imprint recovery was almost instant. The Lucid 4" Topper has a fairly slow recovery from imprint time given the Lucid Memory Foam's density. My parents back pains got better when I got them the 4" Lucid Topper. If you're a normal person, and you keep an open mind, then this Lucid 4" Memory Foam Topper is the best thing to make you sleep extra deeper, and sleep longer period or times. I went back to the Tempur-ES topper for 3 months, and that was the dumbest decision I've made in the past few years. My body oozes with relaxation and comfort on the Lucid 4" Topper now, of which never has happened w/ my Tempur-ES topper. Once you get the 4" Lucid Topper, be prepared to be hard to move around if you want to flip over in the middle of the night, but I flip positions 60-70% less w/ the Lucid Topper compared to the Tempurpedic-ES memory foam topper. I use the Lucid King Pillow hybrid as a pillow, the Lucid body pillow I hold on to w/ my arms when I lay on my side, and the basic Lucid memory foam pillow for in between my legs. The side sleep system I use is the best way to sleep. I do hear the Serta Perfect Sleep Luminous Plush Pillow Top is nice, but I can't imagine anything being more comfortable than the Lucid 4" Topper. Enjoy! -Andy R.

## Frequently Bought Together

- LUCID 4 Inch Gel Memory Foam Mattress Topper, Ventilated Design, Ultra Plush, CertiPUR-US Certified, Twin XL, Blue
- Lucid 4 Inch Mattress Topper Cover - Machine Washable, Non-Slip, Breathable, Zippered - Twin XL White
- Utopia Bedding Zippered Mattress Encasement Twin XL, 100% Waterproof Bed Bug and Dust Mite Proof Mattress Protector, Absorbent Six-Sided Mattress Cover

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-07*