A mattress protector can be an excellent safeguard from dirt, spills, and general wear, ensuring the maximum lifespan for your mattress. However, when buying a mattress protector, it’s important that you buy the right size to ensure a proper fit. A mattress protector that’s too small simply won’t cover the surface of your mattress properly and one that’s too big might shift and slide around while you sleep.
The good news is that it’s easy to find the right size. Mattress protectors fit similarly to the way a fitted sheet would, thus, sizes aren’t too far off from your mattress dimensions.
Below, we’ve broken down mattress protector sizes so that you can pick the best mattress protector for your bed.
Whether you need a twin or queen size mattress protector, Casper has waterproof or breathable, cooling options. Protect your mattress with Casper’s Mattress Protector collection.
As the sheath that covers your mattress, picking a mattress protector that has a secure fit and doesn’t pinch or sag is crucial to keeping your bed cozy and protected, making it a place you look forward to landing at the end of each day.
|Twin Mattress Protector||39″ x 75″|
|Twin XL Mattress Protector||39″ x 80″|
|Full Mattress Protector||54″ x 75″|
|Queen Mattress Protector||60″ x 80″|
|King Mattress Protector||76″ x 80″|
|California King Mattress Protector||72″ x 84″|
Read further for our mattress protector size guide.
A twin bed has one of the smallest types of mattresses you’ll come across. Here are their stats:
A twin bed mattress needs a twin-sized mattress protector. If you’re in search of young children’s bedding, remember to aim for high-quality waterproof backing like Casper’s Waterproof Mattress Protectors to protect against any accidents that occur in the wee hours (hey, it happens).
Twin XL mattresses are slightly longer than Twin mattresses, with the same standard width. Here’s what to expect:
It’s not uncommon to mistake a Twin XL-sized mattress protector for a standard Twin size when shopping. To ensure you get a secure fit, always measure your mattress’ dimensions to confirm they match up with those of the mattress protector before completing a purchase.
Sleep shoppers, take note: full mattresses and double mattresses are interchangeable in the world of bedding. Thus, they have the same dimensions:
Provided they share the above dimensions, a mattress protector described as “Full” should work for a Double mattress, and vice versa.
Queen mattresses are perfect for sleepers who are ready to graduate to next-level quality sleep. Their stats are:
In this scenario, you’ll need a Queen-sized mattress protector.
King-sized mattresses are the broadest of the bunch, with the same length as Queen mattresses. Here’s how they measure up:
King mattresses pair with King-sized mattress protectors. When perusing the best mattress protection, make sure you don’t purchase a California King mattress protector, which is narrower and longer than standard King-sized mattresses.
Couples who share a King sized mattress should aim for styles that emphasize thermoregulation and airflow, like Casper’s Breathable Cooling Mattress Protector, to keep all bedmates comfortable during resting hours.
California King mattresses have a reputation for being the most spacious size in the mattress kingdom, but they actually have a smaller area than King mattresses. Here’s how they compare:
California King mattresses require a California King mattress protector. Because California King mattresses tend to come at a higher price point, it’s essential to choose the best waterproof mattress protector to guard your mattress against liquid damage and get the most out of your sleep.
There’s one last dimension you’ll need to account for when picking the right mattress protector fit for your mattress: depth.
Cheaply made mattress protectors tend to use low-grade waterproof backing to protect your bed, which don’t have the same elasticity as more sophisticated designs. Depending on how thick your mattress depth is, a mattress protector that matches the width and length of your mattress may not be built to cover your model from top to bottom.
Moreover, a poor-quality mattress topper can lead to the following sleep downfalls:
Once you’ve picked the right size, make sure you pick the king of quality. Picking the right mattress protector will guard your mattress, add another layer of comfort, and help you ease into bed each night knowing you have years more dozing to do there.
At Casper, we understand that building better sleep solutions means building better sleep quality and improving your physical and mental health.1
Investing in your sleep quality starts with the proper—and properly-sized—mattress protector. For your solution, check out our Casper mattress protector collection in every mattress size.