HOSPITOLOGY PRODUCTS Mattress Encasement - Zippered Bed Bug Dust Mite Proof Hypoallergenic - Sleep Defense System - Twin XL - Waterproof - Stretchable - Standard 12" Depth - 38" W x 80" L
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Availability:
In Stock.
Arrives
Wednesday, Oct 21
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Material Type: 12" - 18" Depth Mattress
Size: Twin XL
Features
- Knit Polyester
- Zippered mattress cover stretches to fit any Twin XL (38 x 80) standard mattress depth from 12" to 18"
- 100% Waterproof barrier on all six sides of mattress - Lab-tested
- Extra-soft polyester knit fabric is cool and comfortable - breathable waterproof membrane won't trap heat
- Can help improve sleep by reducing common substances that can reach the sleeper and disrupt respiratory function
- Machine washable - Tumble dry low - 5-Year Limited Manufacturers Warranty
Description
Mattress encasement Box spring encasement Pillow encasement Mattress topper Comforter Mattress protector
Brand: HOSPITOLOGY PRODUCTS
Color: White
Size: Twin XL
Fabric Type: Knit Polyester
Special Feature: Water Proof
Brand Name: HOSPITOLOGY PRODUCTS
Age Range Description: Child
Model Name: Hospitology Products Mattress Encasement
Number of Items: 1
Manufacturer: HOSPITOLOGY
UPC: 855039004020
Unit Count: 1 Count
Included Components: 5-year limited manufacturer’s warranty
Item Weight: 2 pounds
Model Number: SDSM02TXL
Manufacturer Part Number: SDSM02TXL
Manufacturer Warranty Description: Hospitology Products offers a 5-year Limited Warranty from Date of Purchase. This warranty covers only defects in workmanship or materials. Warranty is limited to products purchased directly from Hospitology Products or an authorized reseller. Purchaser is responsible for all transportation costs. Structural damage caused by abuse, misuse, improper installation, or failure to follow care instructions will void all warranties. Proof of purchase required. To be eligible for warranty, product must be received in good condition. Hospitology Products will not be responsible for any incidental or consequential damage from regular use of its products, and will not be liable for claims in excess of the purchase price of the product. In rare cases, depending on your water quality, washing your encasement may cause some discoloration. This discoloration will not affect the functionality of the encasement, is not covered by the warranty.
Other Special Features of the Product: Water Proof
Closure Type: Zipper
Water Resistance Level: Waterproof
Fabric Type: Knit Polyester
Product Care Instructions: Machine Wash
Material Type: 12" - 18" Depth Mattress
Thread Count: 2000
Size: Twin XL
Item Display Dimensions: 80 x 38 inches
Color: White
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Oct 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Material Type: 12" - 18" Depth Mattress
Size: Queen
Amazing cover. I bought a few to keep all my mattresses protected, not from anything in particular, but I liked the idea of a keeping my mattresses pristine. I've had these for at least 3 years, and this past week one my dogs had an accident on the bed. Urine soaked through the flat sheet, the fitted sheet, a mattress pad, and I was so bummed to see the encasement also soaked. HOWEVER, when I removed it from the mattress, the mattress was as clean as ever! I was so elated. Certainly an excellent buy for $40 to protect an expensive mattress. I know waterproofness can wear in the wash and depend on the accident itself, so I'll specify that I've washed and dried the encasement as directed just once when I received it, the volume of liquid was pretty significant (likely the full bladder of a 60lb dog), and the accident was discovered within 20 mins or so, so it wasn't sitting for an extended duration (like overnight). The encasement is a pretty good fit and doesn't slip around. Its not something I even notice is on the bed. Its as though it isn't there at all, so its as comfortable as my bed. It is not thick, in terms of being plush, which is perfect. Great buy! Would recommend.
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Reviewed in the United States on December 21, 2025 by Rando
I left this feedback for all the items I purchased and listed here in prevention of BED BUGS. I live in a apartment building. 10 years ago in the city I live in I never heard any mention of bedbugs. Now I hear it everywhere. I purchased the following just as a precaution. Hospitology Sleep Defense System Waterproof/Dust Mite Proof Pillow Encasement, Standard, Set of 2 Hospitology Sleep Defense System Waterproof/Bed Bug Proof Mattress Encasement,80-Inch by 60-Inch, Queen Hospitology Sleep Defense System Bed Bug Proof Box Spring Encasement, 80-Inch by 60-Inch, Queen BEAP 10013 4-Pack Detector Bed Bug Coaster Trap Diatomaceous Earth Food Grade Pest Pistol Mineral Oil I read online many, many, many different suggesting and opinions. These are most popular ideas, and I agree with them. My bed is brand new and I wanted some protection. Every thing listed I purchased on Amazon is good quality and no complaints. I was very nervous the Hospitality Sleep Defense items would have a plastic feel, but it is not the case. The Hospitality Sleep Defense for the pillows and bed have a nice soft and smooth feel to them. They make my bed and pillows feel smoother and softer. They are a good quality and feel like they will last a long time and not rip. They are very big for even the biggest of mattresses or box springs. First of all the Diatomaceous Earth Food Grade box i received is big. I used this for my entire apartment and still have more then half left in the box. Using Diatomaceous Earth Food Grade, and Pest Pistol (online comments are you can also use empty plastic ketchup and mustard bottles) I dusted all long the walls under the carpet (use a dollar store paintbrush to keep it nice and neat), and in some places I lifted the carpet up and sprayed a little on the carpet tacs that hold the carpet in place. You do not have to spray it heavy, only a light coating. Then I took the electrical cover panels and sprayed inside the walls, USE CAUTION, TURN OFF THE ELECTRICAL PANEL SUPPLY. You might want to consider wearing a dollar store face mask, the Diatomaceous Earth Food Grade will blow around a little, if you get carried away with it. Make sure you spray into all holes and crevasses (even in the bathroom) behind the medicine cabinet if there are gaps, in the trimming along the walls, closets, everywhere!!! Every room, every space!!!!!!!. Online reports and comments are that bed bug like hiding behind the medicine cabinet in the bathroom, behind mirrors or photos hanging on walls, dressers, dressers drawers, light shades. I even sprayed a little on my bed frame. Keep in mind, if the Diatomaceous Earth Food Grade gets wet, it is useless and you will have to reapply it. Also note, if you shampoo your rugs a couple times a year, like me, you may have to reapply Diatomaceous Earth Food Grade after your rugs dry. Diatomaceous Earth Food Grade kills all kinds of bugs, cutting into their hard shell bodies and sticks into their joints. This definitely gives me peace of mind when I sleep or laying in my bed during the day. Bed bugs usually feed in the middle of the night, but if they get hungry they will come out all times of the day. Isolate your bed from the walls and the floors. Only have the legs of your bed touching the floor. Keep blankets from touching the walls and floor. Nothing should be touching your walls or floor. ISOLATION! Computer power cords and cell phone cords should not be on your bed when you sleep. Although there are online reports of bedbugs climbing up to the ceiling and falling down/jumping onto beds, I am not that paranoid. Because it is a death sentence for them, they cannot escape or live in the mattress or lay eggs in the mattress because of the Hospitality Sleep Defense. Always make sure you wash and dry your blankets and sheets every week. Dry for at least 20-30 minutes on hot. BEAP 10013 4-Pack Detector Bed Bug Coaster Trap are very strong and very big. I was very surprised! I was nervous, I have a QUEEN size bed with wheels under each leg. But they fit with room to spare. Use the Mineral Oil in the outer trench of the Coasters. Bed Bugs cannot swim in it, they sink to the bottom and drowns them. But dummy me, my queen bed frame has 5 legs, one leg to support the middle of the bed. I used them on my sofa also. Good luck if you find yourself with bedbugs or using these as a prevention and defense. If you do not have the time or energy, you can hire an exterminator which will cost thousands and thousands of dollars. I am the type of person I do not like to use pesticides in my apartment unless I have to. I never use those insect fumigators, they spray pesticides everywhere and you will eventually absorb them into your skin, from the floors and furniture. If you already have bed bugs, I suggest vacuuming every inch of your bed, on your bed, box, and frame head board. Then do your furniture, sofa and recliners. Sofas, couches and recliners are much harder to eradicate bedbugs from, you might want to think about trashing it. Please, before you trash your furniture, damage your furniture so no one else takes it and gets a bedbug nightmare. When you are finished vacuuming, remove the bag, put in a plastic trash bag and TAPE IT SHUT and put outside away from your house in a trash can. They start spraying the Diatomaceous Earth Food Grade everywhere. Bed Bugs are smart creatures, they are very good at hiding until they are hungry. And they will search you out like a blood hound dog. Good luck!
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Reviewed in the United States on August 29, 2014 by R. Griffin
Material Type: 12" - 18" Depth Mattress
Size: King
Great cover that’s water resistant made from nice sod materials, Washes up nicely and doesn’t make a bunch of noise, Soft comfort easy to sleep on with a nice fit
Reviewed in the United States on May 19, 2026 by Darrick
Material Type: 12" - 18" Depth Mattress
Size: Full XL
This is a great product! My twins had them on their dorm beds last year and it was nice knowing we didn't have to worry about bed bugs or whatever was on that icky mattress! I am buying them both bigger ones this year for their apartments, because of the same reason! Easy to use, soft and washable!
Reviewed in the United States on July 6, 2026 by Terrie S Cartmill
I had a bedbug problem that I treated with DE (foodgrade). That one thing got rid of the pesky critters. I bought a new, thick mattress and the cover went on easily with 2 people. Had no problem with the zipper, didn't use the "zipper lock". Didn't think it necessary. I sleep hot and haven't really had a problem with the cover holding heat. It does not make any noise (any noise you might hear would just be the air slowly escaping), it does not hold air. Don't know if it is waterproof, didn't need that feature, haven't checked it out. Don't know if its bedbug proof or not, as I said the DE got rid of my infestation. If you have the creepy crawlers, just buying a mattress protector isn't going to keep you from getting bit. You don't have to call in an exterminator, nor do you have to purchase anything expensive. DE is cheap and goes/lasts a long way/time. Do the research on how to get rid of them, its easy... can't believe how frustrated I was trying to decide which way to go to get rid if the bugs. Not having a lot of $$$. I opted for the easiest and cheapest way to go. It was a no-brainer and started working immediately. This cover is a nice cover for the price and is much better than some, and if some think its keeping the bugs at bay, well then thats fine too. I'm on the fence with that one. I bought it to help with allergies (dust mites, etc...) and it has seemed to help with that, I haven't woken all stuffed up like I used to. So thats the selling point for me! I can breathe a little better since putting on a new bamboo mattress that is way thick and it firs perfectly with no excess. Hope this helps someone, especially if its only to find out about DE for the bugs, remember to get foodgrade and its Diatomaceous Earth. (DE for short) safe for children and pets, its even good to eat for many health related problems. As I said, do the research... what do you think a computer is for??? P.S. I did not have any of the yellow stains on my cover, but I kept it in original packaging until I bought the new mattress. Maybe any pest control residue had "vanished" by the time the package was opened for use?
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Reviewed in the United States on January 30, 2014 by Mstery16
Material Type: 12" - 18" Depth Mattress
Size: Full XL
I am very pleased with this mattress encasement. I have a Full size 14 inch mattress. I purchased the Full XL size for up to 18 inch depth in the mattress encasement. It is just slightly larger than needed but not by much which is much better than too tight with a risk of tearing. To me, it fits perfectly. The deep pockets made it easy to put on. I don’t hear any sound when moving on the mattress either so the sleep quality and comfort are both high on rating. I also have a thin mattress fitted sheet on top. The material and zipper are perfect: strong and thick. The product even has ties to make sure the zipper doesn’t move, together with Velcro patches just in case there are tears. I highly suggest purchasing this mattress encasement even if you have to spend a bit more compared to other options on Amazon. Bravo!
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Reviewed in the United States on June 2, 2026 by Laura Brown
Material Type: 12" - 18" Depth Mattress
Size: Full
Great product I have ordered 4 in total and have been extremely satisfied with my purchase.
Reviewed in the United States on July 24, 2026 by danielle d.
Material Type: 12" - 18" Depth Mattress
Size: Queen
This dust cover works great. It went on easy and fits perfect. The zipper is extra strong and the cover fits like a glove. It's unbelievable the difference in price when buying from a store and this is the same product, if not better. Great buy. ..
Reviewed in the United States on May 29, 2026 by Jesse