Up to -20% Free Shipping & Extended Holiday Returns

Core Mattress Pad

Name: Core Mattress Pad
Brand: Slumber Cloud®
SKU: BED1008WHITE
Price: 143.2 USD
Availability: InStock
Rating: 4.5 (2901 reviews)

Cools Hot Mattresses NASA Cooling Technology Machine Washable

Product Description

Upgrade your sleep with our Core Mattress Pad, featuring NASA-engineered temperature regulation for optimal comfort day and night.

Product Comparison

Features & Benefits

- Proprietary Outlast® lining fabric for maximum heat management and added comfort

- Full elastic pocket holds the pad in place for any mattress up to 20'' deep

- OEKO-TEX® STANDARD 100 Certified Technology. Certification Number: 05.0.9235

Materials

- 300 thread count, 40% Outlast® viscose / 60% cotton top cover

- 100% polyester non-woven lining fabric with Outlast® Technology coating

- 100% polyester fiberfill

- Fullpocket 100% polyester knit elastic skirt

Size Guide

Twin - 39" x 75"
Twin XL - 39" x 80"
Full - 54" x 75"
Queen - 60" x 80"
King - 78" x 80"
Cal-King - 72" x 84"

All mattress pads are 0.25" in thickness

Care Instructions

Basic Care:
Machine wash cold water on a gentle cycle with a mild detergent and with like colors only. Tumble dry low heat until fill is completely dry. Remove from the dryer immediately. To maintain even distribution of fill, re-fluff or shake throughout the dry cycle. Only use non-chlorine bleach when needed. Do not dry clean. Do not iron.

Pro Tip:
Mattress pads should be washed 2-4 times a year. Do not iron, bleach or dry clean your mattress pad.

Free Shipping, Extended Holiday Returns, & Price Matches

Free Shipping: All U.S. orders are shipped right to your door, free of charge. Orders are typically shipped within 24 business hours.

Extended Holiday Risk Free Trial: Sleep on it, wash it, and really put it to the test until February 28th, 2026! If you don’t love your new bedding, just return it for a full refund. No questions asked!

Price Matches: Buy any Slumber Cloud item now. If it goes on a deeper sale within the next 60 days, just let us know and we'll refund the difference.

*Final Sale items and colors are not eligible for return, exchange, or the 60 Night Trial Period.

Core Mattress Pad

On Sale from $143.20

Why You'll Love It:

Set the foundation for a better night's sleep.

The Bedding That's Anything But Basic

Our Core Mattress Pad keeps you and your mattress at the perfect sleeping temperature with integrated temperature-regulating technology for cool comfort all night.

Easy To Use

From putting it on your bed to washing, this is the easiest upgrade you can make to your bed and sleeping comfort.

Versatile Construction

The Core Mattress Pad fits mattresses up to 20" deep, offering temperature regulation and luxurious down alternative fiber-fill for added comfort.

A better night’s sleep because of science.

It’s a fabric designed for NASA spacesuits up where temperatures change by 500 degrees. We think it can handle your bedroom.

How it works

The Only NASA Bedding

Our bedding utilizes Outlast®, the world’s only textile technology to have received the Certified Space Technology™ quality mark by the renowned Space Foundation.

Reduces Sweat By 50%

Our bedding provides proactive heat and moisture management, clinically proven to reduce night sweats by up to 50%.

Read the Outlast Humidity Sleep Study

Improves Deep Sleep By 20%

Our bedding adapts to the ideal temperature of both hot and cold sleepers, proven to decrease tossing & turning and increase sleep efficiency by 20%.

Read The Outlast Heat Sleep Study

"We are very impressed with the cooling function of this mattress pad! Very comfortable!"

- Rachel S.

"Love the new cooling mattress pad, it’s the solution we’ve been looking for since our last one was like sleeping in a sauna. It’s soft and light and feels like sleeping on a cloud."

- Melanie T.

Compare Our Products

Find the perfect solution for your needs

Core Mattress Pad

Outlast® + Cotton

Cooling Cotton

Durable

Plush Comfort

Performance Mattress Pad

Outlast® + TENCEL™ Lyocell

Dual Technologies

Moisture-Wicking

Plush Comfort

Performance Mattress Protector

Outlast® + TENCEL™ Lyocell

Dual Technologies

Waterproof

Thin Layer

	Core Mattress Pad	Performance Mattress Pad	Performance Mattress Protector
Cooling Technology	Single Tech - PCM Outlast® Technology	Dual Tech - PCM Outlast® technology + moisture-wicking lyocell	Dual Tech - PCM Outlast® technology + moisture-wicking lyocell
OEKO-TEX Certification	OKEO-TEX Standard 100 Certified Technology	OKEO-TEX Standard 100 Certified Technology & OEKO-TEX MADE IN GREEN Fabric	OKEO-TEX Standard 100 Certified Technology & OEKO-TEX MADE IN GREEN Fabric
Thickness	.25" thick. Fiber filled top cover for added cushioning.	.25" thick. Fiber filled top cover for added cushioning.	Thin, no added cushioning.
Waterproof	No	No	Yes

Our Products

Outlast® PCM Technology

Proactive temperature management

Balances fluctuations in temperature

Phase change Materials

Brands Like Buffy & Cozy Earth

Moisture-Wicking Fabrics

Reactive Cooling

Works after sweat is produced

Bamboo, Eucalyptus, & Lyocell

Brands Like Parachute & Boll & Branch

Traditional Fabrics

Traps Heat & Moisture

Can cause overheating

Variety of weaves & hand feel

	Us	Moisture-Wicking Fabrics	Traditional Fabrics
Prevents Sweat Build-Up	✓	—	—
Manages Hot & Cold Sleepers' Needs	✓	—	—
Cool To The Touch	Exceptional	Moderate	Poor

FAQs

Will this help even on my memory foam mattress?

Love your bed, but not all the heat buildup? Although they can reduce pressure points, beds with memory foam often get uncomfortably hot. Slumber Cloud bedding with Outlast® technology helps prevent the heat from your mattress from building up. You'll still enjoy the comfort of your mattress but without that hot, sweaty feeling.

What's the difference between a mattress pad and a mattress protector?

Although each of these products utilize Outlast® technology to help you sleep at the perfect temperature, each product addresses different needs. If you need the most temperature-regulation performance, one of our mattress pad options are right for you. If you need 100% waterproof protection and temperature-regulation, you should choose the mattress protector.

I sleep hot, my partner sleeps cold. Is this going to work for us?

Definitely! When you sleep hot but your partner sleeps cold we refer to this as being “thermally incompatible”. Our bedding is designed to automatically adjust to each sleeper’s ideal sleep temperature. With the unique ability to react to each sleeper's temperature independently, our bedding ensures that both you and your partner will sleep comfortably all night long.

How does this compare to the Performance Mattress Pad?

Although both mattress pads utilize Outlast® temperature regulation technology - the Performance Mattress Pad also incorporates a layer of moisture wicking fabric for dual technologies.

The Core Mattress Pad will solve most sleepers temperature issues, but for those that need the most temperature control, they should choose the Performance Mattress Pad.

Over 30,000 happy sleepers have spoken

We've helped over 30,000 sleepers unlock their best rest yet. See why customers and the press are calling our products a dream come true. Read all reviews

★ ★ ★ ★ ★

These sheets and duvet cover are so comfy and cozy! They really do keep me cooler at nights too; which I've been fighting with my entire life - I'm an overheater! I already recommended them to my best friend.

— Kristi M.

★ ★ ★ ★ ★

Perfect for California Summer! I love the lightweight and how well it regulates heat, so that we are not hot nor cold. It is perfection. I was hesitant because of the cost but glad that I decided to purchase it

— Esther B.

★ ★ ★ ★ ★

I have bought countless pillows, new bed, different positions, tried couch, bought new couch. Got this ultra cool pillow, so soft, literally feels like sleeping on a nice cool cloud. Slept the full night, first full night in over a year.

— Sagar J.