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(Top 4):
Best Thin Mattress Options Online in 2021

Where to buy a thin mattress online


Whether you need a thin mattress for guests, to lower the height of your bed, to fit under a trundle bed , a loft bed or on a bunk bed , then you have probably realized that its hard to find a quality thin mattress available on the market. The ones that you do find on Amazon are largely imported from Asia and are generally low quality. When it comes to a thinner mattress you actually want to be even pickier with the quality of mattress you choose. Due to the fact that thinner mattresses have less layers and less comfort materials, you want to be sure that the materials inside are high enough quality to provide support and that don’t break down too quickly. Low quality thin mattresses can break down or not provide proper support and leave even lighter weight sleepers with minimal support. 

The mattresses we have listed in this article are all quality mattresses that are either 6″ thick or 8″ thick. 6 inches is the thinnest we suggest your mattress be for proper support, any thinner and it would be considered a pad or a mattress topper. The mattresses listed below are all from companies we trust and know make a quality product. The types of mattresses listed vary from memory foam to latex and innerspring options. This means there is a thin mattress option for everyone and all comfort preferences. 

AFFILIATE DISCLOSURE: Some of the links in this article are affiliate links. This means we may be compensated if you decide to purchase an item through one of our links.

What is considered a thin mattress?

The majority of standard mattresses are between 8″ and 14″ thick. A thin mattress varies in its definition but would generally be 8″ or thinner. We do not suggest getting a mattress that is any thinner than 6″ as it would be difficult for a mattress that thin to provide proper support for a sleeper. For the purpose of this post all of the “thin mattresses” we have listed are either 6″ or 8″ thick. A 6″ or 8″ mattress height generally is perfect for fitting under a trundle bed, on a bunk bed or even as a floor mattress. It is also sturdy enough to support a guest and easy enough to roll or fold up and put away for storage. Anything thinner than 6″ we would consider a pad and not a mattress.

What is a thin mattress used for?

A thin mattress can have a variety of uses and benefits for sleepers. We have listed some of the most common uses for a thinner profile mattress below. 

Trundle Beds: Trundle beds are a specific type of bed set where a mattress can be popped up from underneath the bed to accommodate an additional sleeper. Many trundle beds require a thinner mattress to be able to fit underneath the bed when not in use. Most trundle beds will require a mattress that is 8″ thick or thinner. 

Bunk Bed: Bunk beds often require a thinner mattress that will fit below the safety rail. A thick mattress will lift the sleeper too high above the safety rail and can be hazard for sleepers to potentially fall out of bed. We recommend checking with your specific bunk bed manufacturer to see what thickness of mattress they recommend for your model.  

Lower Overall Bed Height: Many individuals have trouble getting in and out of a bed set that is too high off the ground. They then opt for a thinner mattress in order to make the overall height of their bed lower. If that is the case but you would prefer to stay with a thicker mattress you can always use a low profile box spring, bed slats or a bunkie board to lower the overall height. 

Things to consider before buying a thin mattress.

Frequency of Usage: We have listed mattresses that meet all standards and budgets. Be sure to think about how often you will be using your mattress. If it will be a guest bed or an extra sleeper you may want to go with a budget mattress, while if it is an every night sleeper you may lean towards a more luxury sleeping experience. 

Material: When it comes to material memory foam, latex and innerspring mattresses all have different benefits and feels. It is important to know which you prefer and choose a mattress that meets your needs. 

Price: Generally speaking, the more expensive the mattress the higher quality materials and the longer it will last. Our best all around mattress is a great middle ground between quality materials and an affordable price. 

The different types of thin mattresses available

Thinner mattresses that are used for trundle beds or bunk beds are very common in the marketplace . There are a variety of options and different materials to choose from, each with its own benefits and downsides. 

Memory Foam: Memory foam was originally invented and used by NASA and ultimately transitioned into use within the sleep industry. Memory foam has great pressure relief abilities but can have a unique feel that takes some getting used to. If you have never slept on a memory foam mattress we recommend testing one out before deciding to purchase one. 

Latex: Latex is one of the most natural and eco-friendly materials in the bedding industry. Latex is not only a popular health-conscious choice but it also has amazing pressure relief and support capabilities. The only downside to latex is that it is quite a bit more expensive than competing foams. 

Innerspring: An innerspring mattress is going to give the most support and “bounce” out of all the mattress types. Innerspring mattresses are also commonly referred to as “hybrid” mattresses. If you have back pain or are looking for additional support, then we generally recommend an innerspring option. Innerspring mattresses will also usually hold up longer than their all foam competitors. 

Top 5: Thin Mattresses



The best all around memory foam mattress for the price.
Over 2,000 5-star reviews.

From $149


The Brooklyn Chill mattress is a basic memory foam mattress made by Brooklyn Bedding. Brooklyn Bedding is a trusted name in the mattress industry and makes all of their own mattresses locally  in Arizona, USA. The majority of other 6″ mattresses you will find on Amazon will be imported from China and much lower quality. The Chill is available in a variety of thicknesses from 6 inches to 14 inches thick. It is a standard memory foam mattress, made with a layer of high density support foam on the bottom and memory foam on top. This mattress has unbeatable value at its low price point. 

High quality natural latex with an organic cotton cover. Greenguard gold certified. Available in a variety of thicknesses and firmnesses.

From $749


PlusBeds specializes in eco-friendly and chemical free mattresses. Their Natural Bliss mattress combines natural latex and an organic cotton cover to give customers a healthy and hypoallergenic sleeping surface that they can feel good about. PlushBeds has been in the mattress industry for many years and is one of the most trusted “eco-friendly” sleep brands on the market. Their prices are also very reasonable compared to their competitors. If you are looking for a natural option for your trundle bed then this is by far the best mattress for you. 



Comfortable 2-sided mattress for all sleep preferences. Organic cotton cover.
Great reviews (over 200 5-star reviews).

From $299


The luxury gel foam mattress by Mattress Insider gives a  luxury memory foam feel at a great price. The mattress also allows for you to unzip and rearrange the foam layers in order to make the mattress firmer or softer. Mattress Insider has coupled this mattress with a high end organic cotton cover that you can feel comfortable resting your head on. Mattress Insider has been in the mattress industry since 2008 and is a brand you can trust. If you enjoy the feel of memory foam and want a product that will last then this is a great option for you. 


A luxury foam mattress at an affordable price

From $459


The Park Meadow mattress by Mattress Insider is the only mattress on this list that utilizes an innerspring (aka pocketed coil) support system. This mattress is great for heavier sleepers or for those who prefer the feel of a traditional innerspring mattress over that of memory foam or an all foam option. Traditionally innerspring mattresses tend to last longer than all foam mattresses as well. Mattress Insider has been making mattresses since 2008 and is a trusted name in the industry. If you are looking for an innerspring mattress that has support but is still thin enough to slide under a trundle bed then this mattress is a great option. 



A mattress built for kids that includes a waterproof cover and a pillow

From $399


5 Little Monkeys is one of the only companies on the market that manufactures a mattress specifically for kids. Their mattress is 8″ thick and made of temperature regulating memory foam. It also comes with an organic cotton removable/washable cover and a pillow. The 8 inch thickness of this mattress will easily slide under a trundle bed and the memory foam and organic cotton will be plenty of support and comfort for your kids

Need accessories for your mattress?

If you need sheets, comforters, mattress protectors, etc… all of the companies listed above also provide accessories that you can purchase with your mattress. 

Alternative options for purchasing a custom thin mattress?

If you prefer not to purchase your mattress online you can look for custom mattress factories in your area to build you a mattress you can test out before buying. A couple custom mattress manufacturers you can check out in person are:

What to do with your old mattress?

When you purchase a mattress online you are left to find a way to get rid of your old one. Luckily “A Bedder World” has mattress disposal services throughout the country. We work with mattress recycling centers to make sure your old mattress gets disposed of in the most eco-friendly manner possible. To date we have recycled over 500K mattresses. Book a pick up here. Or try recycling it yourself!


Thinner profile mattresses are very common in the market place and there are quite a few high quality companies providing options for replacement mattresses. All of the companies listed in this post are companies that we trust and that have great reputations within the sleep community. You can feel confident placing an order with an of them.