Finding a comfortable mattress on a limited budget is easier when you know which specifications matter most. These memory foam mattresses under $300 cover several practical options, including cooling gel foam, washable covers, medium-firm feels, and compact bed-in-a-box designs.
We selected models in multiple sizes and thicknesses to help shoppers compare support, pressure relief, temperature control, certifications, and setup requirements before making a purchase.
Best 10 Memory Foam Mattresses Under 300 Picks for 2026
Best Overall
KOW 12-Inch Queen Memory Foam Mattress
- Three-layer, medium-firm foam design
- Washable cover and fiberglass-free construction
- Supports up to 800 pounds
Best For: Couples wanting a supportive, full-profile queen mattress
Best Twin Value
NEO SLEEP 8-Inch Cooling Gel Twin Mattress
- Cooling gel foam with breathable construction
- Washable cover and fiberglass-free design
- Fits dorms, daybeds, and guest rooms
Best For: Twin-size beds in compact or multipurpose spaces
Best for Couples
Novilla 10-Inch Queen Memory Foam Mattress
- Three-layer medium-feel queen design
- Gel foam targets heat and pressure points
- Designed to absorb partner movement
Best For: Couples wanting balanced comfort and motion control
Best Brand-Backed Option
Zinus 8-Inch Full Cooling Mattress
- Cooling gel foam with a medium feel
- Fiberglass free and independently certified materials
- Compatible with several bed-frame types
Best For: Full-size rooms needing flexible frame compatibility
Best Budget Pick
Best Price Mattress 6-Inch Full
- Medium three-layer foam construction
- Green tea infusion and pressure relief
- 10-year warranty and bed-in-a-box setup
Best For: Budget shoppers wanting a basic full-size mattress
Best Cooling Value
- Gel-infused foam targets heat management
- Medium feel balances support and cushioning
- CertiPUR-US foam with OEKO-TEX cover
Best For: Hot sleepers seeking an affordable full-size mattress
Best Medium-Firm Support
- Five-layer charcoal-infused foam design
- Medium-firm support for multiple sleep styles
- CertiPUR-US and OEKO-TEX certified materials
Best For: Sleepers wanting structured medium-firm support
Cooling Pressure Relief Pick
- Medium-firm gel memory foam support
- Green tea gel and breathable design
- 750-pound capacity with 10-year warranty
Best For: Sleepers wanting cooling comfort and balanced pressure relief
Small-Space Value Pick
6-Inch Full Memory Foam Mattress
- Compressed packaging simplifies setup
- Medium feel for multiple sleep positions
- Motion isolation and pressure relief
Best For: Dorms, kids’ rooms, bunk beds, and guest spaces
Hypoallergenic Support Pick
8-Inch Full Mattress with Cooling Foam
- Medium memory foam with orthopedic support
- Open-cell design promotes airflow
- CertiPUR-US foam and OEKO-TEX cover
Best For: Adults and kids seeking breathable, certified materials
Best Overall – KOW 12-Inch Queen Memory Foam Mattress
If you want one of the more substantial memory foam mattresses under 300, the KOW Queen Mattress combines a 12-inch profile with three foam layers, gel-infused comfort, and a medium-firm feel. Its washable cover, fiberglass-free construction, and 800-pound stated capacity make it a practical choice for couples and everyday bedrooms.
Best For: Couples and sleepers who want a taller, medium-firm queen mattress with a washable cover and low motion transfer.
Pros:
- Three-layer design includes gel memory foam, breathable comfort foam, and a supportive base.
- Removable, machine-washable cover helps simplify upkeep.
- CertiPUR-US certified foam; made in the USA and fiberglass free.
- Supports up to 800 pounds and is designed to reduce motion transfer.
Cons:
- Requires 24–72 hours to fully expand after unboxing.
- The 12-inch profile weighs 59 pounds, so setup may take two people.
The KOW stands out when you prioritize a fuller mattress profile, stronger stated weight capacity, and easy cover care. Its medium-firm construction aims to balance contouring with support without moving into an especially plush feel.
Best Twin Value – NEO SLEEP 8-Inch Cooling Gel Twin Mattress
For shoppers comparing memory foam mattresses under 300 for a smaller room, the NEO SLEEP Twin offers an 8-inch medium-feel design with gel foam, pressure-relieving support, and a washable cover. Its compact size suits bedrooms, dorms, daybeds, and guest spaces.
Best For: Twin beds in dorms, guest rooms, daybeds, and compact bedrooms.
Pros:
- Gel-infused foam and a breathable structure are designed to limit heat buildup.
- Medium-feel foam contours to the body and helps distribute pressure.
- Removable, machine-washable cover and fiberglass-free construction.
- CertiPUR-US foam and an OEKO-TEX certified cover.
Cons:
- At 8 inches, it provides less overall height than the queen options here.
- Needs up to 72 hours to expand fully after delivery.
This NEO SLEEP model is a sensible space-saving option when you need a straightforward Twin mattress with cooling-oriented materials and easy cleaning. Its medium feel should work well for sleepers who prefer balanced cushioning rather than a very firm surface.
Best for Couples – Novilla 10-Inch Queen Memory Foam Mattress
The Novilla 10-inch Queen is a strong contender among memory foam mattresses under 300 for couples who want balanced cushioning and reduced sleep disturbance. Its three foam layers combine gel memory foam, comfort foam, and high-density support, while the cover is designed to feel breathable.
Best For: Couples seeking pressure relief, motion absorption, and a medium-feel queen mattress.
Pros:
- Uses 30% more NanoGel, according to the supplied product details, to improve heat absorption and airflow.
- Three-layer construction is designed to absorb movement and vibration.
- CertiPUR-US foams and an OEKO-TEX Standard 100 certified cover.
- Includes a stated 10-year protection period.
Cons:
- The cover is not identified as removable or machine washable in the supplied details.
- Recommended setup and airing time is 72 hours.
Choose the Novilla if motion absorption and temperature management are more important to you than a very tall mattress profile. The 10-inch height offers a middle ground between slim Twin models and thicker 12-inch designs.
Best Brand-Backed Option – Zinus 8-Inch Full Cooling Mattress
The Zinus Cooling Essential is a practical Full-size pick among memory foam mattresses under 300, especially for guest rooms, apartments, youth bedrooms, or existing bed frames. It pairs cooling gel foam with a medium feel, pressure relief, and a 10-year limited warranty.
Best For: Full-size sleepers who want a versatile mattress with certified materials and broad frame compatibility.
Pros:
- Cooling gel memory foam and a breathable cover are designed to promote airflow.
- Medium feel cushions pressure points while maintaining support.
- Fiberglass free, with CertiPUR-US foam and an OEKO-TEX certified cover.
- Works with platform beds, box springs, slatted frames, and adjustable bases.
Cons:
- The cover is spot-clean only, rather than machine washable.
- At 8 inches, it has a lower profile than the KOW and Novilla queen models.
Zinus is a good fit if you want a Full mattress that can work with an existing setup and comes with a clearly stated limited warranty. Its medium feel and motion-absorbing foam make it flexible for side, back, and combination sleepers.
Best Budget Pick – Best Price Mattress 6-Inch Full
Best Price Mattress Full Mattress 6 inch Bed-In-A-Box, Green Tea Memory Foam White
Check Price On AmazonIf you want memory foam mattresses under 300, this 6-inch Best Price Mattress model keeps the design straightforward and budget-friendly. Its medium feel combines memory foam, support foam, and high-density layers for pressure relief and balanced support, while green tea infusion adds a fresh-touch feature.
Best For: Budget shoppers seeking a compact full-size mattress for everyday use, a guest room, or a platform bed.
Pros:
- Medium feel with three-layer foam construction.
- Green tea-infused memory foam is designed to support a fresh sleep environment.
- CertiPUR-US certified foams and a 10-year warranty.
- Bed-in-a-box format is convenient to handle.
Cons:
- At 6 inches thick, it offers less cushioning than the 8-inch alternatives.
- The cover is listed for hand washing only.
This is a practical value choice when low cost and basic pressure-relieving comfort matter more than extra thickness. Consider a thicker model if you prefer more substantial cushioning.
Best Cooling Value – GAESTE 8-Inch Full
Among memory foam mattresses under 300, the GAESTE 8-inch full-size model stands out for its gel-infused foam and medium feel. It is designed to manage heat while contouring to the body, making it a balanced option for shoppers who want cushioning without an overly soft feel.
Best For: Hot sleepers and budget-conscious buyers furnishing a primary bedroom, guest room, or compatible platform setup.
Pros:
- Gel-infused memory foam is designed for cooling comfort.
- Medium feel provides pressure relief with stable support.
- CertiPUR-US foam and an OEKO-TEX certified cover.
- Compressed shipping makes setup and handling easier.
Cons:
- Requires up to 72 hours to fully expand after unboxing.
- The product notes list a one-layer construction, offering less detailed layering information.
The GAESTE is a sensible pick if cooling is a priority and you want the added cushioning of an 8-inch profile. Allow the full expansion period before judging its feel.
Best Medium-Firm Support – NapQueen 8-Inch Full
NapQueen 8 Inch Full Size Mattress, Bamboo Charcoal Memory Foam Mattress, Bed in a Box
Check Price On AmazonFor shoppers comparing memory foam mattresses under 300, the NapQueen 8-inch full combines medium-firm comfort with a five-layer construction. Charcoal-infused memory foam, transition foam, and a high-density base are intended to support spinal alignment and pressure relief across different sleep positions.
Best For: Back, side, and combination sleepers who prefer a medium-firm feel and a structured 8-inch mattress.
Pros:
- Five-layer construction includes charcoal-infused memory foam and high-density base foam.
- Medium-firm feel is designed for multiple sleep styles.
- CertiPUR-US foams and OEKO-TEX Standard 100 textiles.
- Removable cover and bed-in-a-box packaging.
Cons:
- Expansion may take longer in colder rooms.
- Limited warranty is two years.
- Its full-size dimensions should be checked carefully despite the brand name.
This model is a strong fit when you want a firmer, more structured feel than a basic soft memory foam bed. Verify your frame dimensions and allow the mattress time to expand before use.
Cooling Pressure Relief Pick – EGOHOME 8-Inch Full Mattress
If you’re comparing memory foam mattresses under 300, the EGOHOME 8-inch full mattress stands out for its medium-firm feel, pressure-relieving gel memory foam, and cooling green tea gel. Its full-size design suits adults, kids, and a range of sleeping positions.
Best For: Sleepers seeking balanced support, pressure relief, and temperature-regulating features.
Pros:
- Memory foam contours to the body and helps distribute pressure evenly.
- Breathable foam and green tea gel are designed to promote a cooler sleep surface.
- Supports all sleep positions and offers low noise when turning.
- Includes a 10-year manufacturer warranty and is listed as fiberglass free.
Cons:
- The 8-inch profile may provide less depth than thicker mattresses.
- The cover requires hand washing, according to the care instructions.
With a 750-pound maximum weight capacity and stable medium-firm construction, this is a versatile full mattress for shoppers prioritizing dependable support and cooling features on a budget.
Small-Space Value Pick – 6-Inch Full Memory Foam Mattress
Among memory foam mattresses under 300, this 6-inch full mattress is a practical option for rooms where space and setup convenience matter. It arrives compressed in a box and combines a medium feel with contouring memory foam and motion isolation.
Best For: Kids’ rooms, dorms, bunk beds, guest spaces, and budget-conscious full-size setups.
Pros:
- Ships rolled and compressed for easier delivery and handling.
- Medium foam feel is designed to accommodate back, side, and stomach sleepers.
- Memory foam helps relieve pressure around the shoulders and hips.
- Low motion transfer can help reduce disturbance between sleepers.
Cons:
- The 6-inch profile is thinner than the other mattresses in this roundup.
- It may require 24 to 72 hours to fully expand after unboxing.
- The maximum listed weight capacity is 500 pounds.
This mattress makes the most sense when easy delivery, a compact profile, and straightforward medium support are more important than a taller multi-layer design.
Hypoallergenic Support Pick – 8-Inch Full Mattress with Cooling Foam
This 8-inch full mattress is a strong contender among memory foam mattresses under 300 for shoppers who want medium support with orthopedic positioning, breathable foam, and certified materials. Its memory foam construction is designed to contour to the body while helping distribute weight.
Best For: Adults and kids looking for breathable, pressure-relieving support with hypoallergenic materials.
Pros:
- High-density and premium memory foam provide contouring pressure relief.
- Open-cell foam is designed to improve airflow and reduce heat buildup.
- CertiPUR-US foam and an OEKO-TEX-certified cover support the product’s material-focused appeal.
- Includes a 10-year limited warranty and a removable, non-fiberglass cover.
Cons:
- The mattress may need 24 to 72 hours to expand fully after unboxing.
- The maximum listed weight capacity for full size is 500 pounds.
Choose this model if material certifications, temperature regulation, and a supportive medium feel are priorities. It offers a well-rounded feature set for a full-size mattress without adding unnecessary complexity.
How We Picked the Best Memory Foam Mattresses Under 300
We focused on mattresses that offer useful features at an accessible price, including memory foam comfort layers, cooling materials, removable or breathable covers, and medium or medium-firm support. We also considered thickness, available sizes, boxed shipping, pressure-relieving design, and certifications such as CertiPUR-US when listed.
Because budget mattresses can vary significantly in construction, we treated stated specifications as a starting point rather than a guarantee of identical performance. Your body weight, sleeping position, room temperature, and bed frame can all affect how a mattress feels.
Quick Comparison
- Best for a taller profile: The 10- and 12-inch options generally provide more cushioning and room for layered foam.
- Best for compact budgets: Six-inch models can work well in guest rooms, dorms, children’s rooms, or for lighter sleepers.
- Best for cooling: Look for gel-infused foam, breathable covers, and designs specifically marketed for temperature control.
- Best for couples: Medium-firm memory foam may help reduce motion transfer, though edge support differs by model.
Key Buying Factors for Memory Foam Mattresses Under $300
Firmness and Sleeping Position
Side sleepers often prefer more cushioning around the shoulders and hips, while back and stomach sleepers typically need enough firmness to keep the midsection from sinking too deeply. Medium-firm mattresses are a versatile starting point, but perceived firmness depends on body weight.
Thickness and Support
Mattress thickness is not the same as support quality, but thicker models usually allow more room for comfort and transition layers. A six-inch mattress may be practical for lighter users or occasional sleeping, while an eight- to twelve-inch design may feel more substantial for everyday use.
Cooling and Pressure Relief
Memory foam can retain heat, so gel foam and breathable covers may be useful for warm sleepers. Pressure relief comes from the foam’s ability to conform without allowing excessive sinking. If you change positions frequently, avoid choosing solely by softness.
Cover, Certification, and Setup
A removable washable cover is convenient for routine care. CertiPUR-US certification can provide additional information about tested foam emissions and materials. Most boxed mattresses require several hours or longer to expand, so follow the manufacturer’s setup and ventilation instructions.
Who Should Buy Which Memory Foam Mattresses Under 300?
Choose a 10- or 12-inch model if you want a fuller, more cushioned feel for nightly use or need additional foam depth. Choose an eight-inch model if you want a balance of affordability, support, and easier handling. Choose a six-inch model for a guest bed, occasional use, a child’s room, or a lighter sleeper who prefers a firmer, lower-profile surface.
Cooling-focused options suit warm sleepers, while charcoal or green-tea-infused designs may appeal to shoppers seeking odor-conscious materials. Before ordering, verify the exact size, return policy, expansion time, foundation requirements, and warranty terms. Those details can matter as much as the advertised comfort features when comparing memory foam mattresses under $300.