-
Regular price $19.99Sale price $19.99 Regular priceUnit price per$19.99 -
All-Way StretchRegular price $99.99Sale price $99.99 Regular priceUnit price per$99.99 -
-
All-Way StretchRegular price $79.99Sale price $79.99 Regular priceUnit price per
Zippered Mattress Protectors That Cover All Six Sides
Most mattress protectors stop at the top and sides. The underside, the edges and every seam are left on their own. A zippered mattress encasement wraps the whole mattress and closes it up, so nothing is left uncovered.
Our Stretchwick Performance® Mattress Encasement pairs that full coverage with a waterproof barrier that stays quiet under you. The fabric stretches for a snug fit on mattresses up to 18" deep, so your bed keeps the feel you bought it for.
It's built for anyone who wants their mattress protected from every direction: allergy-prone sleepers, guest rooms, kids' rooms, and anyone who just invested in a new mattress and plans to keep it that way.
Key Features of Our Zippered Mattress Encasement
Here's what sets a full zip encasement apart from a standard fitted protector.
Six-Sided Coverage
Wraps the top, all four sides and the underside of your mattress, not just the sleep surface.
Three-Sided Invisible Zipper
Opens wide for easy on and off, then zips closed for full coverage.
Waterproof, Not Noisy
A noiseless waterproof barrier guards against spills and stains without the plastic crinkle.
Stretches to 18" Deep
360° stretch fabric hugs mattresses up to 18" tall while keeping their original feel.
Is a Zippered Mattress Encasement Right for You?
An encasement and a fitted protector both have a place. Here's a quick way to decide which one your bed needs.
Choose an Encasement for Full Coverage
If you want the underside, edges and seams covered too, go with a zippered encasement. It's a great fit for allergy-prone sleepers and for a new mattress you plan to keep for years.
Choose a Fitted Protector for Easy Weekly Washing
If spills and sweat are your main concern and you strip the bed often, a fitted protector is quicker to take on and off. Browse our mattress protectors for breathable everyday options.
Encase the Box Spring, Too
Box springs have corners and an open frame that collect dust. Our encasement can be used on a box spring of the same size that fits within its 18" depth.
Concerned About Bed Bugs?
Six-sided coverage can help as one part of a complete bed bug plan. Shop our mattress encasements for bed bugs for sizing and guidance built around that job.
Zippered Mattress Cover Sizes From Twin to California King
The Stretchwick Performance® Mattress Encasement comes in six sizes, each with an 18" pocket depth: Twin (39" x 75"), Twin XL (39" x 80"), Full (54" x 75"), Queen (60" x 80"), King (78" x 80") and Cal King (72" x 84").
Measure the full height of your mattress, including any pillowtop or topper, before you order. Our mattress size guide can help if you're not sure which size you have.
Mattress Encasement vs. Mattress Protector: What's the Difference?
A mattress protector works like a fitted sheet with a waterproof layer. It covers the top and wraps partway down the sides with an elastic edge. A mattress encasement surrounds the entire mattress and closes with a zipper, so the underside and seams are covered too.
Both guard against spills, sweat and everyday wear. The encasement simply covers more ground. For a deeper look, read our guide to what a mattress encasement is or our bed protector guide before you choose.
Complete Your Bed
An encasement protects the foundation of your sleep. Round out the bed with protection and sheets that fit, or browse all our mattress protectors to compare.
Pillow Protectors
A washable layer that keeps your pillows fresh and protected night after night.
Shop pillow protectorsDeep Pocket Sheets
Fitted sheets with room for a thick mattress and an encasement underneath.
Shop deep pocket sheetsMattress Encasements for Bed Bugs
Six-sided coverage that can help as one part of a bed bug plan.
Shop bed bug encasementsZippered Mattress Encasement FAQs
Quick answers to the questions we hear most.
How do you put on a zippered mattress encasement?
Unzip the encasement all the way and lay it flat on the floor or box spring. Lift one end of the mattress, slide it in, then work the encasement over the rest of the mattress and zip it fully closed. Our Stretchwick Performance® Mattress Encasement opens on three sides, which makes it easier to get on, even solo.
Are zippered mattress encasements machine washable?
Ours is. Machine wash the Stretchwick Performance® Mattress Encasement cold and tumble dry low. The three-sided zipper opens wide, so it comes off the mattress without a wrestling match.
How often should you wash a mattress encasement?
Since it sits under your fitted sheet, an encasement doesn't need washing as often as your sheets. Wash it every one to two months, and right away after a spill. Follow the care instructions: machine wash cold and tumble dry low.
Do I need a mattress encasement, or is a protector enough?
For everyday spills and sweat, a fitted protector does the job. If you want the underside and seams covered too, or you have allergies, choose an encasement. It surrounds all six sides and zips closed, so no part of the mattress is left exposed.
How much is a mattress encasement?
Our Stretchwick Performance® Mattress Encasement starts at $99.99 for a Twin and goes up to $149.99 for a King or Cal King. Every size fits mattresses up to 18" deep and comes with a noiseless waterproof barrier.
Do zippered mattress encasements help with dust mites and allergens?
They can help. Dust mites and allergens collect inside and around a mattress, and a zippered encasement puts a barrier around all six sides instead of just the top. Wash it regularly to keep allergen buildup down.