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Mattress Topper Encasement
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- Fast Free Shipping
- 120-Night Returns
- 1 Year Warranty
- GOTS Certified Organic Cotton
- Free Install with a Latex Topper
Questions? Call 984-299-6850 or chat with us
Certifications - tap to learn more
GOTS Certified Organic CottonCertified to the Global Organic Textile Standard by Control Union (license 1084143). See our certificatesComplete your setup
Get $2 back in Merry Points to use on your next order. Joining is free, and new members get a $10 welcome bonus.Join Merry Points free and get $10 toward a future order, plus points every time you shop. How it works
Why you'll love it
- Made from GOTS certified organic cotton for a natural, chemical-free sleep.
- Designed to be noise-free with a soft, breathable fabric.
- Features a 4 oz. muslin non-slip backing to keep your topper in place.
- The zipper lets you fit it on 2" or 3" latex and memory foam toppers.
- Made from undyed and unbleached organic cotton, offering a timeless beige or off-white hue.
- Built to last and easy to maintain with machine washing to keep the fabric fresh.
Sleep Well, Bee Well
Every order supports 4 sqft of wildflower habitat for pollinators.
120-Night Return Policy
FREE U.S. SHIPPING

Fits 2- and 3-inch toppers
A snug, soft cover for your topper
- ?Want to protect your topper from everyday wear?
- ?Tired of a topper that slides around on the mattress?
- ?Prefer undyed, unbleached organic cotton?
Our Mattress Topper Encasement is a stretch knit made from GOTS certified organic cotton, left undyed and unbleached. It hugs any 2- or 3-inch topper, latex or memory foam, with no loose fabric. A 4 oz. muslin backing grips the mattress so the topper stays put, and a zipper makes it easy to put on and take off.

A snug, custom fit
The soft knit stretches over your topper and hugs it tightly, so there's no loose fabric to bunch up or rustle under you.

Keeps your topper in place
The underside is a 4 oz. cotton muslin that grips the mattress, so your topper doesn't slide around during the night.

Undyed organic cotton
Made from GOTS certified organic cotton, left undyed and unbleached in its natural off-white shade. It's machine washable.
Easy on, easy off
How the encasement goes on
- Open the zipper. It runs along one short side and continues 6 inches down each long side, so the opening is wide.
- Slide your topper in. Any 2- or 3-inch topper fits, latex or memory foam, from any brand.
- Zip it closed and smooth it out. The knit stretches to fit, and the muslin underside grips the mattress.
Two ways to cover a topper
Encasement or topper cover?

Mattress Topper Encasement
A stretch knit cover with a non-slip muslin backing.
- Stretch knit, GOTS certified organic cotton
- Non-slip 4 oz. muslin underside
- One cover fits 2- or 3-inch toppers

Mattress Topper Cover
A simple zippered cover in 150 GSM organic cotton. See the topper cover →
- Woven 150 GSM organic cotton
- Sized for 2- or 3-inch toppers
- Free installation when bought with a latex topper
Pairs well with7 Zone Organic Latex TopperGOLS certified organic Dunlop latex. Choose the 2- or 3-inch topper to fit this encasement.Shop the topper →
Protect the mattress tooOrganic Waterproof Mattress ProtectorKeeps spills, sweat and stains out of your mattress, in GOTS certified organic cotton.Shop the protector →
Six sizes
Topper encasement sizes
Every standard US size, each made to fit a 2- or 3-inch topper. Each drawing below is to scale.
Twin
38" x 75"
97 x 191 cm
Kids and single sleepersTwin XL
38" x 80"
97 x 203 cm
Taller single sleepers and dorm bedsFull
54" x 75"
137 x 191 cm
Single adults and guest roomsQueen
60" x 80"
152 x 203 cm
Couples and growing familiesKing
76" x 80"
193 x 203 cm
Couples who want more roomCalifornia King
72" x 84"
183 x 213 cm
Taller couplesWidth x length. Pick the size of your topper. The encasement fits toppers 2 or 3 inches thick.
Care
Encasement care instructions
Tip: the knit is cotton, so it may shrink a little in the first wash. Air drying keeps the fit snug.
Machine wash gently
Take the topper out first. Wash the encasement on a gentle or delicate cycle with mild detergent, and follow the care label.
Air dry, no high heat
Air dry it rather than tumble drying. High heat can shrink the cotton and affect the fit.
No bleach or harsh cleaners
Bleach and harsh cleaning agents weaken the fibers and can change the natural color of the undyed cotton.
Spot-clean small spills
For minor spills, dab the spot with water and a little mild detergent. Store a spare encasement somewhere cool and dry, out of direct sun.
Mattress Topper Encasement FAQS:
Will it fit my mattress topper?
Yes, if your topper is 2 or 3 inches thick. The encasement fits latex and memory foam toppers from any brand. Choose the size that matches your topper: Twin, Twin XL, Full, Queen, King or Cal King.
What is the encasement made of?
A stretch knit made from GOTS certified organic cotton, left undyed and unbleached in its natural off-white shade. The underside is a 4 oz. cotton muslin that helps keep your topper from sliding.
How is it different from the Mattress Topper Cover?
The encasement is a stretch knit with a non-slip muslin backing, and one cover fits 2- or 3-inch toppers. The Mattress Topper Cover is a simpler woven cover in 150 GSM organic cotton, sized for 2- or 3-inch toppers.
Does it have a full wrap-around zipper?
No. The zipper runs along one short side of the topper and continues 6 inches down both long sides, which makes the opening wide enough to get the topper in and out easily.
Can I machine wash it?
Yes. Take the topper out, then wash the encasement on a gentle or delicate cycle with mild detergent, following the care label. Air dry it, and avoid high heat or tumble drying.
Will it shrink?
Cotton can shrink a little. Air drying and avoiding high heat keep any extra shrinkage to a minimum, so the encasement keeps its snug fit.
Is it noisy?
No. The soft knit fits tightly with no loose fabric, so it doesn't crinkle or rustle when you move.
What sizes are available?
Twin (38 x 75 inches), Twin XL (38 x 80), Full (54 x 75), Queen (60 x 80), King (76 x 80) and Cal King (72 x 84).
Can I return it?
Yes. Unused items in their original condition can be returned within 120 nights for an exchange or a full refund. Used items are eligible for store credit through our donation process. It also comes with a 1-year limited warranty.
Shipping and returns
Free shipping, 120 nights to return

Shipping and delivery
Shipping is free on all orders across the contiguous USA. For Alaska, Hawaii and other US territories, we offer FedEx and USPS rates.
Once shipped, orders usually arrive within 2 to 5 business days. Outside the US? Add items to your cart to see if your product ships to your country.
Warranty and returns
Your encasement comes with a 1-year limited warranty.
- Return within 120 nights. Unused items in their original condition can be returned for an exchange or a full refund.
- Used it already? Used items are eligible for store credit through our donation process.
- Questions? Contact us and we'll help.

