Finding a comfortable mattress on a limited budget is easier when you focus on the features that affect everyday sleep: mattress height, firmness, cooling materials, and the right size for your room.
We selected 10 memory foam mattresses under $300 spanning twin, full, and queen sizes, with options for compact spaces, guest rooms, children, and adults seeking affordable pressure relief.
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
- 800-pound weight capacity
- Washable, removable cover
Best For: Couples wanting balanced support and easy cover care
Best Budget Pick
Amazon Basics 6-Inch Full Gel Memory Foam Mattress
- Plush 6-inch full-size profile
- Gel foam helps relieve pressure
- CertiPUR-US and OEKO-TEX certifications
Best For: Guest rooms, dorms, and compact spaces
Best for Cooling
Novilla 12-Inch Queen Gel Memory Foam Mattress
- Added NanoGel for heat absorption
- Motion-absorbing three-layer design
- 10-year protection and certified foams
Best For: Hot sleepers and couples wanting less motion transfer
Best Full-Size Support
EGOHOME 12-Inch Green Tea Gel Mattress
- Medium-firm 12-inch full mattress
- Green tea gel for cooling comfort
- 750-pound capacity and 10-year warranty
Best For: Full-size sleepers wanting deeper medium-firm support
Budget Support Pick
Best Price Mattress 6-Inch Full
- Medium-feel three-layer foam design
- Green tea infusion and pressure relief
- CertiPUR-US foams with 10-year warranty
Best For: Guest rooms and budget-focused full-size mattress shoppers
Compact Cooling Pick
Zinus 8-Inch Twin Cooling Essential
- Cooling gel foam in a twin profile
- Medium feel with pressure relief
- Lightweight and fiberglass-free design
Best For: Twin beds, bunk rooms, guest spaces, and compact bedrooms
Best Cooling Support
FDW 8-Inch Twin Gel Memory Foam Mattress
- Medium feel with gel memory foam for pressure relief
- Six-inch high-density base adds stable support
- Removable cover is breathable and machine washable
Best For: Sleepers wanting a thicker, supportive Twin mattress with cooling features
Best Space-Saving Value
Best Price Mattress 5-Inch Twin
- Medium-firm gel memory foam cushions pressure points
- Breathable design supports airflow and cooling
- Compressed packaging simplifies moving and setup
Best For: Compact Twin setups where portability and a low profile matter
Best Low-Profile Support
FDW 6-Inch Twin Gel Memory Foam Mattress
- Medium feel with gel foam for pressure relief
- Five-inch base supports a compact 6-inch profile
- Removable cover is breathable and machine washable
Best For: Shoppers wanting a manageable low-profile Twin mattress with easy care
Best Overall – KOW 12-Inch Queen Memory Foam Mattress
For shoppers comparing memory foam mattresses under 300, the KOW 12-inch queen model combines a three-layer foam design with medium-firm support, cooling features, and a washable cover. Its 800-pound capacity and low-motion-transfer construction make it a practical option for couples seeking balanced comfort.
Best For: Couples and sleepers who want a supportive queen mattress with a removable, washable cover.
Pros:
- Three foam layers include gel memory foam, comfort foam, and a high-flex support base.
- Medium-firm feel supports spinal alignment and accommodates up to 800 pounds.
- Breathable cover is removable and machine washable.
- CertiPUR-US certified foam is made in the USA and listed as fiberglass free.
Cons:
- Requires 24–72 hours to fully expand after unboxing.
- At 59 pounds, it may be difficult for one person to position.
The KOW stands out when you want a full-height queen mattress with stable support, motion isolation, and easier cover care. It is especially compelling for buyers who prioritize a medium-firm feel and higher weight capacity.
Best Budget Pick – Amazon Basics 6-Inch Full Gel Memory Foam Mattress
Amazon Basics Soft Plush Feel Gel Memory Foam Mattress, Breathable, 6 Inch, Full, White/Grey
Check Price On AmazonIf you are searching for memory foam mattresses under 300 for a smaller bedroom, dorm, or guest room, this Amazon Basics full mattress offers a compact 6-inch profile and plush feel. Its gel memory foam comfort layer is designed to contour to the body while the support foam promotes airflow.
Best For: Budget-conscious shoppers furnishing guest rooms, dorms, or smaller sleeping spaces.
Pros:
- Plush feel combines 2 inches of gel memory foam with 4 inches of support foam.
- Designed to relieve pressure across the shoulders, spine, and hips.
- CertiPUR-US foam and an OEKO-TEX Standard 100 cover provide stated material certifications.
- Compressed packaging makes transport through hallways and elevators easier.
Cons:
- The 6-inch profile provides less height and cushioning than 12-inch models.
- The cover is intended for spot cleaning and should not be removed.
- May need up to 72 hours to regain shape and air out.
This is a straightforward value choice for sleepers who prefer a softer surface and do not need the extra height of a thicker mattress. Its full size and easy setup also suit temporary or secondary sleeping arrangements.
Best for Cooling – Novilla 12-Inch Queen Gel Memory Foam Mattress
Among memory foam mattresses under 300, the Novilla 12-inch queen model is geared toward sleepers who want a cooler, more breathable feel. Its added NanoGel, three-layer construction, and moisture- and odor-absorbing foam are designed to support comfortable overnight use.
Best For: Queen-size sleepers who prioritize cooling, pressure relief, and reduced partner disturbance.
Pros:
- Additional NanoGel is designed to increase heat absorption and airflow.
- Three foam layers provide pressure relief, support, and motion absorption.
- CertiPUR-US foams and an OEKO-TEX Standard 100 cover support the stated material standards.
- Includes a stated 10-year protection period.
Cons:
- Its 500-pound weight capacity is lower than some competing models.
- Requires about 72 hours to air out and reshape after delivery.
- The listing details include a pocketed-coil specification despite describing the mattress as memory foam, so buyers may want to verify construction.
The Novilla makes the most sense for shoppers who tend to sleep warm or share a bed with a restless partner. Its 12-inch height adds substantial cushioning, while the stated certifications and warranty-style protection add reassurance.
Best Full-Size Support – EGOHOME 12-Inch Green Tea Gel Mattress
The EGOHOME full mattress is a useful option when comparing memory foam mattresses under 300 and looking for a thicker, medium-firm sleep surface. Its green tea gel memory foam is designed for pressure relief and temperature regulation, while the 12-inch profile provides a more substantial feel than a basic low-profile mattress.
Best For: Full-size sleepers who want medium-firm support, pressure relief, and cooling gel features.
Pros:
- Medium-firm memory foam is designed to support multiple sleeping positions.
- Green tea gel and a bubble-hole structure promote a cooler, more breathable feel.
- Supports up to 750 pounds and is listed as fiberglass free.
- Includes a 10-year manufacturer warranty.
Cons:
- The cover requires hand washing rather than machine washing.
- Its 60-pound weight may make setup more demanding.
- The supplied notes do not specify an expansion time after unboxing.
Choose the EGOHOME if you want a full-size mattress with a deeper profile, medium-firm support, and green tea gel cooling features. The higher stated weight capacity and warranty make it a strong fit for buyers seeking long-term everyday use.
Cooling Value Pick – Zinus 10-Inch Queen Cooling Essential
For shoppers comparing memory foam mattresses under 300, the Zinus Cooling Essential is a practical queen-size option with a medium feel, cooling gel memory foam, and pressure-relieving contouring. Its 10-inch profile works with platform beds, box springs, slatted frames, and adjustable bases.
Best For: Couples and combination sleepers who want a queen mattress with cooling features, motion absorption, and a versatile medium feel.
Pros:
- Cooling gel memory foam and a breathable cover promote airflow.
- Medium feel balances cushioning and support for side, back, and combination sleepers.
- Fiberglass-free construction, CertiPUR-US foam, and an OEKO-TEX Standard 100 cover.
- Queen size supports up to 500 pounds and includes a 10-year limited warranty.
Cons:
- At 56.8 pounds, this queen mattress may require two people to move.
- It needs 24–72 hours to fully expand after unboxing.
- Spot-clean-only care may limit cleaning options.
This is a strong all-around choice when you want a queen-size mattress with cooling, pressure relief, and broad bed-frame compatibility without choosing an especially firm or plush feel.
Budget Support 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 AmazonAmong memory foam mattresses under 300, this 6-inch full-size Best Price Mattress is a compact, budget-minded option with a medium feel and three-layer construction. Its memory foam contours to pressure points while support and high-density foam add structure.
Best For: Guest rooms, smaller bedrooms, and shoppers seeking a lightweight full mattress with motion isolation and green tea infusion.
Pros:
- Three-layer design combines memory foam, support foam, and high-density foam.
- Green tea infusion is intended to help keep the mattress fresh.
- CertiPUR-US certified foams and a cotton-based fire retardant.
- Backed by a 10-year warranty.
Cons:
- The 6-inch profile provides less material than thicker mattress options.
- Full dimensions are 75 by 54 inches, rather than the longer 80-inch full size some shoppers expect.
- Hand-wash-only cover care may be inconvenient.
This mattress makes the most sense for value-focused buyers who prefer a thinner full-size bed-in-a-box and want basic pressure relief without adding extra height or weight.
Compact Cooling Pick – Zinus 8-Inch Twin Cooling Essential
If you need one of the more compact memory foam mattresses under 300, the Zinus 8-inch Twin Cooling Essential offers cooling gel foam, a medium feel, and pressure relief in a lightweight twin format. It is compatible with platform beds, slatted frames, box springs, and adjustable bases.
Best For: Twin-size sleepers, youth bedrooms, bunk setups, guest spaces, and smaller apartments.
Pros:
- Cooling gel memory foam and a breathable cover are designed for cooler sleep.
- Medium feel suits side, back, and combination sleepers.
- Fiberglass-free construction with CertiPUR-US foam and an OEKO-TEX Standard 100 cover.
- Lightweight 25.9-pound design is easier to handle than larger mattresses.
Cons:
- Twin weight capacity is limited to 250 pounds.
- The 8-inch profile may offer less cushioning than thicker models.
- Full expansion can take 24–72 hours after unboxing.
This is a sensible pick when room size, bed height, or portability matters more than having a thicker mattress, while still providing the cooling and pressure-relief features associated with memory foam.
Best Cooling Support – FDW 8-Inch Twin Gel Memory Foam Mattress
If you want one of the more supportive memory foam mattresses under 300, this 8-inch FDW Twin model combines a gel memory foam comfort layer with a high-density foam base. Its medium feel, pressure-relieving design, and washable cover make it a practical choice for everyday use.
Best For: Sleepers who want a medium-feel Twin mattress with extra cushioning, airflow, and a removable washable cover.
Pros:
- Two inches of ventilated gel memory foam help with pressure relief and temperature regulation.
- Six-inch high-density base foam provides stable support for back, side, and stomach sleepers.
- Removable, breathable cover can be unzipped for machine washing.
- CertiPUR-US certified and rated for a maximum weight capacity of 1,000 pounds.
Cons:
- The 8-inch profile may be more mattress than needed for a compact guest or bunk setup.
- The supplied details identify the cover as washable but do not specify a complete cleaning method beyond care instructions.
This is the strongest all-around option of the three if you value a thicker profile, added base support, and easier cover maintenance while shopping for memory foam mattresses under 300.
Best Space-Saving Value – Best Price Mattress 5-Inch Twin
This 5-inch Best Price Mattress is a straightforward pick among memory foam mattresses under 300, with a medium-firm feel and gel-infused foam designed to balance body contouring, pressure relief, and temperature regulation. Its compressed packaging also makes moving it into place easier.
Best For: Shoppers seeking a compact, medium-firm Twin mattress for a simple sleep setup, guest room, or space where easy handling matters.
Pros:
- Gel-infused memory foam adapts to the body and helps ease pressure points.
- Breathable construction and cooling gel are designed to support airflow and temperature regulation.
- Arrives compressed in a box and is intended to expand fully within 72 hours.
- Medium-firm feel offers a balance of support and comfort.
Cons:
- The 5-inch profile provides less overall height than the two thicker alternatives.
- The supplied specifications list a single foam layer, so it may offer less structural layering than some models.
Choose this model when portability and a lower-profile design are priorities. It delivers the essential features of gel memory foam in a compact Twin format, though shoppers wanting a taller support system may prefer an 8-inch mattress.
Best Low-Profile Support – FDW 6-Inch Twin Gel Memory Foam Mattress
The FDW 6-inch Twin is a practical middle ground among memory foam mattresses under 300. It pairs a one-inch gel memory foam layer with a five-inch base, offering medium support, pressure relief, and a lower profile that is easy to move and set up.
Best For: Buyers who want a medium Twin mattress with cooling foam, a manageable 6-inch height, and a removable washable cover.
Pros:
- Gel memory foam is designed to relieve pressure and help regulate temperature.
- Five-inch base foam provides stable support in a lower-profile design.
- Removable cover is breathable and machine washable for easier maintenance.
- Ships in a box and is designed to fully expand within 72 hours after unboxing.
Cons:
- Its one-inch comfort layer is thinner than the 8-inch FDW model’s two-inch gel layer.
- The manufacturer warranty listed in the supplied details is limited to three months.
This model suits shoppers who want more structure than a very thin mattress without stepping up to a taller profile. Its washable cover and boxed delivery add everyday convenience, while the 6-inch construction keeps the design relatively compact.
How We Picked the Best Memory Foam Mattresses Under 300
We focused on mattresses that combine practical construction with accessible pricing. Our comparison considered available sizes, mattress height, foam type, firmness descriptions, cooling features, removable or washable covers, and certifications or safety claims when provided. We also included a range of profiles, from compact 5- and 6-inch models to taller 10- and 12-inch mattresses, because thickness can affect support, setup, and suitability for different sleepers.
Product specifications and prices can change, so confirm the current listing details before ordering. A mattress-in-a-box may also need time to expand and air out after unpacking; follow the manufacturer’s setup instructions.
Quick Comparison
- Best for queen-size value: Look at the KOW, Novilla, Zinus, and EGOHOME 12-inch options.
- Best for compact rooms: Twin models from Zinus, FDW, and Best Price Mattress take up less floor space.
- Best for lower profiles: Five- and 6-inch mattresses are easier to move and often suit bunk beds, daybeds, or occasional use.
- Best for cooling features: Gel-infused or gel memory foam models may help manage heat, though bedding and room temperature also matter.
Key Buying Factors for Memory Foam Mattresses Under 300
Size and Room Fit
Choose the largest size your room and bed frame can comfortably accommodate. Twin mattresses suit children, solo sleepers, and guest rooms; full sizes provide more width; queen sizes are generally better for couples or adults who want extra sleeping space.
Height and Support
A thicker mattress often provides more cushioning and may be a better choice for adults, side sleepers, or anyone who prefers a higher bed. Lower-profile mattresses can work well for children, bunk beds, trundles, and occasional sleeping, but verify your frame’s height and weight guidance.
Firmness and Sleeping Position
Medium or medium-firm foam is a versatile starting point. Side sleepers often prefer enough cushioning at the shoulders and hips, while back and stomach sleepers usually need a stable surface that limits excessive sinking. Personal preference, body weight, and existing support needs all affect the best choice.
Cooling and Materials
Gel foam and breathable covers may reduce heat buildup, but no foam mattress guarantees cool sleep. Use breathable sheets, keep the room comfortable, and check whether the cover is removable or washable. If a listing mentions fiberglass, read the care instructions carefully and avoid removing any protective cover unless the manufacturer explicitly permits it.
Who Should Buy Which Memory Foam Mattresses Under 300?
Choose a taller 10- or 12-inch queen or full mattress if you want more cushioning for everyday adult use. A medium-firm queen is a practical choice for couples or primary bedrooms, while a full model can balance sleeping space and room efficiency. For children, college rooms, bunk beds, or occasional guests, an 8-inch or lower twin mattress may be easier to handle and more economical. If you want a simple budget upgrade with cooling-oriented materials, prioritize gel memory foam; if maintenance matters most, prioritize a removable, washable cover. Finally, check the return policy, warranty, foundation requirements, expansion time, and exact dimensions before buying.