---
product_id: 197472821
title: "Lucid® 8\" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size"
brand: "lucid"
price: "¥164527"
currency: JPY
in_stock: true
reviews_count: 13
category: "Lucid"
url: https://www.desertcart.jp/products/197472821-lucid-8-medium-firm-gel-memory-foam-mattress-bamboo-charcoal
store_origin: JP
region: Japan
---

# Bamboo charcoal absorbs moisture & regulates heat Bed-in-a-box for effortless delivery & setup Cooling gel infusion for temperature control Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size

**Brand:** lucid
**Price:** ¥164527
**Availability:** ✅ In Stock

## Summary

> 🛏️ Upgrade your sleep game with cool comfort and firm support!

## Quick Answers

- **What is this?** Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size by lucid
- **How much does it cost?** ¥164527 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/197472821-lucid-8-medium-firm-gel-memory-foam-mattress-bamboo-charcoal)

## 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

- • **Plug & Play Comfort:** Ships compressed in a box, ready to use on any frame—no box spring needed.
- • **Backed by Confidence:** 10-year limited warranty ensures long-lasting comfort and peace of mind.
- • **Sleep Cool, Stay Fresh:** Advanced cooling gel and bamboo charcoal layers keep you sweat-free all night.
- • **Certified Safe & Durable:** Made in the USA with CertiPUR-US® certified foam, free from fiberglass and harmful emissions.
- • **Balanced Support for Every Sleeper:** Medium firm feel with 3-layer foam design aligns your spine and eases pressure points.

## Overview

The Lucid® 8" Medium Firm Gel Memory Foam Mattress combines cooling gel infusion and bamboo charcoal to regulate temperature and moisture, providing a medium firm feel ideal for back, side, and stomach sleepers. Featuring a 3-layer foam construction with CertiPUR-US® certified, fiberglass-free materials, this mattress ships compressed in a box for easy setup and is backed by a 10-year warranty. Perfect for dorms, guest rooms, or anyone seeking affordable, durable, and comfortable sleep.

## Description

A mattress upgrade shouldn't require a second job. The Lucid® 8-Inch Gel Memory Foam Mattress is a versatile, accessible option that punches well above its price tag; available in Medium Plush or Medium Firm. The Medium Plush version features 2 inches of cooling gel memory foam that gently contours to your body, making it a great pick for side sleepers or anyone who wants a softer mattress. The Medium Firm version uses 1.5 inches of memory foam to balance contouring and support—practical for guest rooms, dorms, and teen rooms where you need a medium firm mattress that works for everyone. Both include a high-density support base that keeps everything stable throughout the night. This mattress is safely made in the USA with global and U.S. parts, including CertiPUR-US certified foam independently tested for content, emissions, and durability. It's designed with you and your family in mind, this mattress is fiberglass free and has safely passed all flammability testing in U.S. laboratories. This memory foam mattress is backed by a 10-year limited warranty. A convenient mattress in a box ships easily and works with any flat surface, no box spring needed. Available in Twin, Twin XL, Full, Queen, and King.

Review: I got 8 hours and 25 mins the first night I used this. - Now let me start off by saying I have a sleep disorder and typically get about 6-6.5 hours of non consecutive sleep a night. I’ve also been in a high stress situation since Christmas of 2023 which was finally relieved when I moved into this new space. I bought the medium firm 14” mattress and started sleeping on it only a week ago. I’ll be sure to update as time goes on. I needed something more firm as I am definitely a side or stomach sleeper but I didn’t want it to be so firm that I felt like I was sleeping on concrete. I also really wanted a taller mattress since I like to sit on the edge pretty frequently, and I don’t love a low bed cause getting in and out can be difficult... This was perfect. It was super easy to unroll and set up. I left it in my new place for a week before sleeping on it, but I think it would’ve been ready the next day to sleep on. It also didn’t try to hit us in the face when we unwrapped it which was a win. It fit my bed frame perfectly which was expected. It makes no noise, but I’m also the only person sleeping on it so do with that what you will. No smell. Great price for a quality mattress from desertcart. I just need another set of sheets for the thicker mattress, but my 12” set still works for now…LOL I would definitely buy this brand again in the future. I’ll update again in a few months to a year as I typically have chronic back, neck and knee pain that I’m hopeful this will help with. I can say that after a week I’m feeling confident that it’ll only get better.
Review: Very good for aching back and worn out knees - If you get back ache when you get up in the morning, it's time to change the mattress. Indeed, my old mattress had a visible depression in the middle, and was not supporting my back. In addition to this, my worn out knees felt pain, for the mattress is bowed up, when my body weight is placed on it. Since there is not much cartilage left in my knees, this bowed up situation puts undue pressure on the knee joints. Too often I wake up in pain in the middle of the night and gingerly shift the position. If this resonates with you, then you might want to consider this mattress in the 'firm' rating. It's a memory foam, and it hugs your body contour. The whole body, that is every part of the body that is in contact with the mattress, is supported. Even though it is rated "firm," it does not feel hard; it is actually soft--it will readily give to the weight of your body--but it will hold your body up, without being plush. Plush is bad for your back. Your body is not sinking into the mattress. In this sense, it is 'firm.' I slept on it the first night, and I feel already the difference: my back hurts less. I could straighten up, without the great pain I used to feel. I think it will get better and better. So worth the money I paid for it. I will give 5 stars, after I slept on it for a week. For now it is 4 stars. After One Week report: I must say, I am glad I bought this mattress. The morning after the first night of sleep on this mattress, my back hurt less--about one half? As I slept on the mattress, the back pain significantly diminished. After 7 nights of sleep, the back pain is maybe 1/5 of what it was before. I now can get up and straighten myself without difficulty. Good stuff!

## Features

- COOLING GEL INFUSION: This cooling gel memory foam mattress sleeps cooler; gel infused into the comfort layer draws heat away from your body, while bamboo charcoal absorbs moisture and helps regulate temperature throughout the night
- MEDIUM FIRM FEEL: A medium firm mattress designed for back, side, and stomach sleepers; 1.5 inches of gel memory foam eases pressure points while the support base keeps your spine aligned. A practical pick for guest rooms, dorms, and teen rooms
- DESIGNED FOR COMFORT: Three layers of foam mattress construction work together all night: 1.5 inches of gel memory foam, a 1-inch transition layer, and a 5.5-inch high-density base; balanced support for a stable sleep surface
- SAFELY MADE IN THE USA: Mattress made in the U.S with global and U.S. parts, including CertiPUR-US certified foam independently tested for content, emissions, and durability; backed by a 10-year limited warranty
- BED IN A BOX: This memory foam mattress in a box ships compressed for easy delivery; works on adjustable bases, platform frames, and slatted frames right out of the box; no box spring needed

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0864LCS4Q |
| Additional Features | Bamboo Charcoal, Bed in a Box, CertiPUR-US Certified, Cooling Gel Infusion, Fiberglass Free |
| Age Range Description | Adult, Teen |
| Best Sellers Rank | #4,731 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #19 in Mattresses |
| Brand | LUCID |
| Brand Name | LUCID |
| Color | White |
| Construction Type | Memory Foam |
| Cover Material | Polyester Blend |
| Customer Reviews | 4.4 out of 5 stars 12,493 Reviews |
| Fill Material | Bamboo Charcoal Foam, Gel Memory Foam, High Density Foam |
| Included Components | Mattress |
| Item Depth | 8 inches |
| Item Dimensions | 80 x 39 x 8 inches |
| Item Dimensions L x W x Thickness | 80"L x 39"W x 8"Th |
| Item Firmness Description | Medium Firm |
| Item Thickness | 8 inches |
| Item Type Name | Bed Mattress Conventional |
| Item Weight | 24.8 pounds |
| Manufacturer | LUCID |
| Manufacturer Part Number | LU08TXFR30GF |
| Manufacturer Warranty Description | 10 year warranty. |
| Material Type | Memory Foam |
| Mattress Base Compatibility | Slatted Base, Solid Foundation |
| Mattress Coil Type | Encased Coil |
| Mattress Comfort Layer Material | Gel Memory Foam |
| Mattress Type | Standard Mattress |
| Model Name | Lucid 8 Inch Twin XL Mattress- Firm Gel Memory Foam Mattress – Bamboo Charcoal Mattress in a Box – CertiPur Certified |
| Model Number | LU08TXFR30GF |
| Number of Items | 1 |
| Number of Layers | 3 |
| Number of Packs | 1 |
| Product Benefits | Edge Support, Motion Isolation, Pressure Relief, Spinal Alignment, Temperature Regulation |
| Product Care Instructions | DO NOT REMOVE OR WASH COVER: Spot clean only, vacuum your mattress, sprinkle some baking soda on it. Use a scrub brush to gently rub the powder into the mattress and leave it for 10 minutes and vacuum the excess powder., Do not wash. Do not use bleach. Do not machine dry. Do not iron. Do not dry clean. |
| Product Dimensions | 80"L x 39"W x 8"Th |
| Shape | Round |
| Size | Twin XL |
| Style Name | 8" |
| Top Style | Smooth Top |
| UPC | 840008332907 |
| Unit Count | 1 Count |
| top-style | Smooth Top |

## Product Details

- **Brand:** LUCID
- **Cover Material:** Polyester Blend
- **Fill Material:** Bamboo Charcoal Foam, Gel Memory Foam, High Density Foam
- **Item Firmness Description:** Medium Firm
- **Item Weight:** 24.8 pounds
- **Number of Layers:** 3
- **Product Dimensions:** 80"L x 39"W x 8"Th
- **Size:** Twin XL
- **Special Feature:** Bamboo Charcoal, Bed in a Box, CertiPUR-US Certified, Cooling Gel Infusion, Fiberglass Free
- **Top Style:** Smooth Top

## Images

![Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size - Image 1](https://m.media-amazon.com/images/I/81aC-WrB6LL.jpg)
![Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size - Image 2](https://m.media-amazon.com/images/I/71DAkJ1Y6FL.jpg)
![Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size - Image 3](https://m.media-amazon.com/images/I/71JcCL9McJL.jpg)
![Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size - Image 4](https://m.media-amazon.com/images/I/810BkE9RXzL.jpg)
![Lucid® 8" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – Twin XL Size - Image 5](https://m.media-amazon.com/images/I/71nbcBB4tPL.jpg)

## Available Options

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

## Questions & Answers

**Q: What profile height should I get?**
A: The 5" and 6" are firmer for teens, guest rooms, & RVs. The 8" and 10” have multiple feels for universal appeal. The 12" is medium plush or medium firm for guest bedrooms and side sleepers. The 14" is medium plush or medium firm for master bedrooms.

**Q: What do bamboo charcoal and cooling gel do?**
A: Bamboo charcoal and cooling gel are infused in the foam. Bamboo charcoal is naturally hypoallergenic and may help capture odors and moisture. Cooling gel helps regulate temperature since memory foam has a tendency to sleep hot.

**Q: Do I need to use a box spring with this mattress?**
A: No. All our mattresses were designed to lay on any flat foundation without a box spring. Place your mattress directly on an adjustable base, flat frame, or upholstered platform base and you’re good to go!

**Q: Should I use a mattress protector?**
A: Yes! Mattress protectors extend the life of your mattress and create a cleaner sleep environment.

**Q: Will my mattress come in a box?**
A: Our mattresses arrive compressed and rolled in a box, making them easy to move. Open it in a convenient spot (near its final destination) and let it decompress for 24-72 hours. Moving the mattress is more difficult after it has decompressed.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I got 8 hours and 25 mins the first night I used this.
*by J***E on March 22, 2026*

Now let me start off by saying I have a sleep disorder and typically get about 6-6.5 hours of non consecutive sleep a night. I’ve also been in a high stress situation since Christmas of 2023 which was finally relieved when I moved into this new space. I bought the medium firm 14” mattress and started sleeping on it only a week ago. I’ll be sure to update as time goes on. I needed something more firm as I am definitely a side or stomach sleeper but I didn’t want it to be so firm that I felt like I was sleeping on concrete. I also really wanted a taller mattress since I like to sit on the edge pretty frequently, and I don’t love a low bed cause getting in and out can be difficult... This was perfect. It was super easy to unroll and set up. I left it in my new place for a week before sleeping on it, but I think it would’ve been ready the next day to sleep on. It also didn’t try to hit us in the face when we unwrapped it which was a win. It fit my bed frame perfectly which was expected. It makes no noise, but I’m also the only person sleeping on it so do with that what you will. No smell. Great price for a quality mattress from Amazon. I just need another set of sheets for the thicker mattress, but my 12” set still works for now…LOL I would definitely buy this brand again in the future. I’ll update again in a few months to a year as I typically have chronic back, neck and knee pain that I’m hopeful this will help with. I can say that after a week I’m feeling confident that it’ll only get better.

### ⭐⭐⭐⭐⭐ Very good for aching back and worn out knees
*by P***V on March 9, 2024*

If you get back ache when you get up in the morning, it's time to change the mattress. Indeed, my old mattress had a visible depression in the middle, and was not supporting my back. In addition to this, my worn out knees felt pain, for the mattress is bowed up, when my body weight is placed on it. Since there is not much cartilage left in my knees, this bowed up situation puts undue pressure on the knee joints. Too often I wake up in pain in the middle of the night and gingerly shift the position. If this resonates with you, then you might want to consider this mattress in the 'firm' rating. It's a memory foam, and it hugs your body contour. The whole body, that is every part of the body that is in contact with the mattress, is supported. Even though it is rated "firm," it does not feel hard; it is actually soft--it will readily give to the weight of your body--but it will hold your body up, without being plush. Plush is bad for your back. Your body is not sinking into the mattress. In this sense, it is 'firm.' I slept on it the first night, and I feel already the difference: my back hurts less. I could straighten up, without the great pain I used to feel. I think it will get better and better. So worth the money I paid for it. I will give 5 stars, after I slept on it for a week. For now it is 4 stars. After One Week report: I must say, I am glad I bought this mattress. The morning after the first night of sleep on this mattress, my back hurt less--about one half? As I slept on the mattress, the back pain significantly diminished. After 7 nights of sleep, the back pain is maybe 1/5 of what it was before. I now can get up and straighten myself without difficulty. Good stuff!

### ⭐⭐⭐⭐ Good mattress and almost perfect
*by M***P on February 26, 2024*

Having used spring mattresses for over 20 years, decided to finally switch to memory foam. This mattress was a good value and after about 2 weeks of use, it has converted me. There were both good and bad that I experienced within the past 2 weeks. The good: --Is firm as any spring mattress I've owned --The length and width fit a Twin size perfectly so it will existing cots, bunk beds, box spring, etc --It comes with a fitted cover and straps in the bottom, and was sealed fully in plastic out of the box --The initial chemical smell didn't last more than a couple of days, and I used a couple of fitted sheets initially and that helped in tue first couple of days --All my existing Twin sheets all fit this mattress --The firmness is perfect for anyone with back problems like me --It stays cooler than my previous mattress so it's more comfortable to sleep --Does not make any squeaking sounds like springs so don't have to disturb the other person in the room when tossing/turning at night. The bad: --It took 2 more days to inflate fully than expected --The height was listed as 6" but after fully inflating it measured around 5.6" to 5.7" --There were no instructions included about washing or removing the fitted cover it came with --Realized quickly that can't sit on the edges of the bed like a regular spring mattress - I slid off when I tried to do this on this mattress Overall a great bargain, and almost perfect in every way. Will consider replacing all my future mattresses as they expire with this brand.

## Frequently Bought Together

- Lucid 8 Inch Twin XL Mattress - Firm Gel Memory Foam – Bamboo Charcoal Foam –Gel Infused- Hypoallergenic Mattress
- Lucid L150 Adjustable Base – Bed Frame with Head and Foot Incline – Wireless Remote Control – Premium Quiet Motor, Twin XL size, Charcoal
- SafeRest 100% Waterproof Twin XL Size Mattress Protector - Fitted with Stretchable Pockets - Machine Washable Cotton Mattress Cover for Bed

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-15*