Shopping for memory foam mattresses under 300 does not have to mean settling for thin comfort or basic support. Today’s budget-friendly options can still offer pressure relief, motion control, and bed-in-a-box convenience.
Below, we’ve narrowed the field to 10 strong picks based on comfort level, cooling features, construction, and overall value so you can choose confidently without overspending.
Best 10 Memory Foam Mattresses Under 300 Picks for 2026
Cool Comfort Pick
- Gel-infused foam for all-season cooling
- Medium feel with pressure relief support
- CertiPUR-US foam and OEKO-TEX cover
Best For: Full-size sleepers who want cooling gel memory foam and balanced support
Plush Value Option
Amazon Basics 8" Plush Full Mattress
- Plush foam layer contours to the body
- Three layers add softness, airflow, and support
- CertiPUR-US and OEKO-TEX certified
Best For: Sleepers who want a softer plush memory foam feel with breathable support
Cooling Queen Choice
Novilla 10" Gel Memory Foam Queen
- Gel-infused foam supports pressure relief
- Motion isolation suits couples and shared beds
- Cooling cover helps with airflow and temperature control
Best For: Queen-size sleepers who want cooling gel foam and motion isolation
Compact Budget Buy
Best Price Mattress 6" Green Tea Full
- Memory foam with green tea infusion
- Three-layer construction for balanced support
- CertiPUR-US certified with 10-year warranty
Best For: Budget-conscious buyers who want a basic full-size mattress with a lower profile
Cooling Value Pick
Zinus 8" Cooling Essential Memory Foam
- Cooling gel foam helps pull heat away.
- Medium feel balances cushioning and support.
- CertiPUR-US and OEKO-TEX certified materials.
Best For: Cooler sleep on a budget for side, back, and combo sleepers.
Supportive Budget Pick
NapQueen 8" Charcoal Memory Foam
- Medium-firm feel supports spinal alignment.
- Charcoal-infused foam with layered construction.
- CertiPUR-US and OEKO-TEX certified materials.
Best For: Full-size sleepers wanting firmer support and simple setup.
Compact Mattress Pick
Zinus 6" Green Tea Memory Foam
- Compact 6-inch profile suits smaller spaces.
- Green tea and ActivCharcoal help maintain freshness.
- Pressure-relieving foam with CertiPUR-US certification.
Best For: Back sleepers and average-weight sleepers in tight spaces.
Budget-Friendly Pressure Relief
6 Inch Full Size Memory Foam Mattress
- Dual-layer memory foam and high-density foam
- Medium-firm feel with pressure relief
- Washable zippered knit cover
Best For: Full-size sleepers needing a basic low-profile option
Cooling Comfort Upgrade
EGOHOME 8-Inch Full Memory Foam Mattress
- 8-inch profile with medium-firm support
- Green tea gel and breathable foam for cooling
- Designed for pressure relief and all-position sleep
Best For: Shoppers wanting a thicker budget mattress with cooling features
Cool Comfort Pick – GAESTE 8" Cooling Gel Full
If you want memory foam mattresses under 300 that prioritize a cooler feel, this GAESTE full-size option is built around gel-infused foam and a medium firmness profile. It aims to balance pressure relief with stable support, making it a practical fit for everyday sleeping without a high price tag.
Best For: Full-size sleepers who want cooling gel memory foam with balanced medium support.
Pros:
- Gel-infused memory foam is designed for all-season cooling.
- Medium feel contours to the body for pressure relief at the shoulders, hips, and back.
- CertiPUR-US certified foam and an OEKO-TEX certified cover support safer everyday use.
- Compressed-in-a-box setup works with most full-size bed frames, box springs, or platforms.
Cons:
- Only available in an 8-inch profile, so it may feel lower than thicker mattresses.
- Needs up to 72 hours to fully expand after unboxing.
Overall, this is a straightforward budget-friendly mattress if cooling and medium support matter most. It looks especially appealing for a primary bedroom or guest room where you want dependable comfort without overspending.
Plush Value Option – Amazon Basics 8" Plush Full Mattress
Amazon Basics Plush Memory Foam Mattress, Breathable, 8 Inch, Full, White/Grey, 75 x 54 x 8 inches
Check Price On AmazonAmong memory foam mattresses under 300, this Amazon Basics full mattress stands out for its plush feel and three-layer construction. It’s made to contour to different sleep positions while still offering a breathable structure and a stable base.
Best For: Sleepers who want a softer, plush memory foam feel with breathable support.
Pros:
- Plush memory foam layer adapts to the body’s contours.
- Three-layer design combines softness, airflow, and bottom-layer stability.
- Breathable air holes and a wavy base surface help promote circulation.
- CertiPUR-US Certified foam and STANDARD 100 by OEKO-TEX certification add peace of mind.
Cons:
- Plush feel may be too soft for buyers who prefer a firmer mattress.
- Requires up to 72 hours for full decompression and odor dissipation.
This is a practical pick if you want a softer feel without giving up a structured foam build. It makes sense for full-size shoppers who value comfort first and want a budget-oriented mattress with safety certifications.
Cooling Queen Choice – Novilla 10" Gel Memory Foam Queen
If you’re comparing memory foam mattresses under 300 in queen size, this Novilla model is built around pressure relief, motion isolation, and cooling comfort. Its 10-inch profile and multiple foam layers are aimed at sleepers who want more cushioning and a more substantial feel.
Best For: Queen-size sleepers who want cooling gel foam, motion isolation, and pressure relief.
Pros:
- Gel-infused memory foam targets pressure points and spinal alignment.
- Multiple foam layers and high-density foam help with stability and motion absorption.
- Cooling cover and gel foam are designed to improve breathability and temperature control.
- CertiPUR-US certified foam, odor-free design, and a 100-day free trial add buyer confidence.
Cons:
- Queen size may be larger than shoppers needing a compact bed.
- Needs up to 72 hours to fully expand after unpacking.
This is a strong option for couples or anyone sensitive to movement and heat at night. The combination of a 10-inch build and cooling gel foam gives it a more premium feel while still fitting a budget-minded search.
Compact Budget Buy – Best Price Mattress 6" Green Tea Full
Best Price Mattress Full Mattress 6 inch Bed-In-A-Box, Green Tea Memory Foam White
Check Price On AmazonFor shoppers focused on memory foam mattresses under 300, this Best Price Mattress full-size bed-in-a-box is a simple, lower-profile option with green tea infusion. It blends memory foam, support foam, and high-density layers to provide balanced comfort at an entry-level thickness.
Best For: Budget-conscious buyers who want a basic full-size memory foam mattress with a lower profile.
Pros:
- Memory foam molds to the body for pressure-point relief.
- Green tea infusion is designed to help keep the mattress feeling fresh.
- Three-layer build combines memory foam, support foam, and high-density foam.
- CertiPUR-US certified foams and a 10-year warranty add value.
Cons:
- At 6 inches thick, it has a thinner profile than many alternatives.
- Hand-wash care only may be less convenient than removable-cover designs.
This mattress makes sense if you want a straightforward, lower-cost full-size option without extra frills. It’s especially practical for guest rooms, starter setups, or anyone who prefers a thinner mattress.
Cooling Value Pick – Zinus 8" Cooling Essential Memory Foam
If you want memory foam mattresses under 300 that focus on cooler sleep without giving up pressure relief, this Zinus full-size pick is a practical place to start. Its cooling gel memory foam and breathable cover are built to help move heat away from the body, while the medium feel aims to balance cushioning and support for everyday use.
Best For: Side, back, and combination sleepers who want a cooler-feeling medium mattress for a guest room, apartment, or primary bed.
Pros:
- Cooling gel memory foam and a breathable cover support airflow through the night.
- Medium feel is designed to cushion without sinking too much.
- CertiPUR-US foam and OEKO-TEX certified cover add peace of mind.
- Works with platform beds, box springs, slatted frames, and adjustable bases.
Cons:
- 8-inch profile may feel more basic than thicker mattresses.
- Full-size support maxes out at 500 lbs, so heavier needs may call for a different setup.
Overall, this is a straightforward budget-friendly memory foam mattress that puts cooling and certified materials first. If you want a familiar medium feel with easy setup and broad compatibility, it checks a lot of boxes for the price.
Supportive Budget Pick – NapQueen 8" Charcoal Memory Foam
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, this NapQueen full-size model stands out for its medium-firm feel and charcoal-infused foam build. It is designed to deliver a balanced mix of cushioning and support, with CertiPUR-US certified foams and OEKO-TEX textiles for added confidence.
Best For: Sleepers who want a medium-firm full mattress with orthopedic-style support and easy bed-in-a-box setup.
Pros:
- Medium-firm feel aims to support spinal alignment and pressure relief.
- Charcoal-infused memory foam and high-density base foam create a layered build.
- CertiPUR-US certified foams and OEKO-TEX Standard 100 textiles.
- Zip-off cover can be removed for washing.
Cons:
- Weight capacity is listed at 350 lbs, lower than some competing full-size mattresses.
- Full inflation can take up to 72 hours, especially in colder rooms.
This is a solid choice if you want a firmer-feeling memory foam mattress without overcomplicating the purchase. Its support-focused construction and easy shipping make it a sensible pick for everyday full-size use.
Compact Mattress Pick – Zinus 6" Green Tea Memory Foam
If you need memory foam mattresses under 300 for a smaller space, this 6-inch Zinus model is the most compact option in the group. It pairs pressure-relieving foam with green tea and ActivCharcoal infusion, aiming for a fresh, supportive sleep surface that is especially practical for back sleepers and average-weight sleepers.
Best For: Back sleepers, average-weight sleepers, and anyone furnishing a guest room, bunk bed, or compact bedroom.
Pros:
- 6-inch profile is easy to fit into smaller rooms and simpler bed setups.
- Green tea and ActivCharcoal infusion are designed to keep the mattress feeling fresh.
- Pressure-relieving memory foam over durable high-density base foam.
- CertiPUR-US certified foam and a 10-year limited warranty.
Cons:
- Thin 6-inch build may not feel plush enough for shoppers wanting deeper cushioning.
- Best suited to back sleepers and average-weight sleepers rather than everyone.
This mattress makes sense when space, simplicity, and value matter more than a thicker profile. It is a no-frills memory foam option with a fresh-feeling design and dependable basic support.
Budget-Friendly Pressure Relief – 6 Inch Full Size Memory Foam Mattress
If you’re shopping for memory foam mattresses under 300, this 6-inch full mattress is a straightforward pick for basic comfort and pressure relief. The dual-layer foam build combines memory foam and high-density foam to contour to your body while keeping the feel medium firm, and the removable knit cover helps make upkeep easier.
Best For: Full-size sleepers who want an affordable, low-profile mattress for pressure relief, motion isolation, and easy setup.
Pros:
- Dual-layer memory foam and high-density foam provide balanced support and softness.
- Medium-firm feel is designed to suit different sleeping positions.
- Motion isolation can help reduce partner disturbance.
- Breathable knit cover is zipper-removable and machine washable.
Cons:
- 6-inch profile may feel thin for shoppers who prefer a taller mattress.
- Needs 48 to 73 hours to fully expand after unboxing.
This is a practical budget mattress when you want simple setup and dependable comfort without extra frills. Its low profile makes it especially useful for compact spaces, but the thinner build is the main tradeoff.
Cool Sleep Pick – COOL GEL 6-Inch Full Mattress
For shoppers comparing memory foam mattresses under 300, this 6-inch full mattress stands out for its cooling gel foam and practical low-profile design. It uses gel-infused memory foam with an open-cell structure to improve airflow, while the medium feel and high-density base aim to deliver pressure relief and spinal support.
Best For: Bunk beds, trundle beds, daybeds, kids’ rooms, RVs, and guest spaces where a cooler low-profile mattress makes sense.
Pros:
- Gel-infused memory foam is designed to help draw heat away and boost airflow.
- Medium firmness supports pressure relief and spinal alignment.
- Fiberglass-free construction and CertiPUR-US certified foam add peace of mind.
- Low 6-inch height works well where guardrail clearance matters.
Cons:
- 6-inch thickness may be too slim for buyers wanting deeper cushioning.
- Spot-clean care is more limited than a fully removable-washable cover.
This is a smart buy if cooling and low-profile sizing matter more than plush thickness. It’s especially well matched to secondary sleeping spaces and frames with clearance limits.
Cooling Comfort Upgrade – EGOHOME 8-Inch Full Memory Foam Mattress
If you want memory foam mattresses under 300 with a little more depth, this 8-inch full model adds a roomier feel while staying focused on pressure relief. It uses premium memory foam with a green tea gel infusion and a breathable bubble-hole structure to help regulate temperature and keep the sleep surface feeling fresh.
Best For: Full-size sleepers who want a medium-firm 8-inch mattress with cooling features and all-position support.
Pros:
- 8-inch profile offers more cushion than a basic 6-inch mattress.
- Green tea gel and breathable foam design support cooler sleep.
- Medium-firm feel is intended to work across sleep positions.
- Stable foam structure helps maintain consistent firmness over time.
Cons:
- Hand-wash-only care is less convenient than a washable cover.
- As a firmer medium-firm build, it may not suit those seeking a soft plush feel.
This model is a strong step up if you want a fuller-feeling mattress without leaving the budget category. The added thickness and cooling-focused materials make it the most versatile option here.
How We Picked the Best Memory Foam Mattresses Under 300
We focused on the traits that matter most in the budget category: reliable foam construction, balanced comfort, practical thickness options, and features that help with heat and odor management. We also favored models with certifications, simple delivery formats, and sizes that commonly stay within reach of the $300 limit.
Quick Comparison
When comparing Memory Foam Mattresses Under 300, thickness is one of the fastest ways to narrow your options. Six-inch models are usually better for guest rooms, kids, or lighter sleepers, while 8-inch beds tend to feel more supportive for everyday use. A 10-inch mattress may offer a plusher, more substantial feel, but availability under budget can vary by size and sale pricing.
Cooling and Breathability
If you sleep warm, look for gel-infused foam, breathable covers, bamboo charcoal, or other airflow-focused materials. These features will not make a mattress feel cold, but they can help reduce heat buildup compared with plain foam.
Support and Firmness
Most affordable memory foam mattresses land in the medium to medium-firm range. That tends to work well for back and side sleepers who want contouring without excessive sink. Heavier sleepers may prefer the thicker options in this group for extra support and durability.
Key Buying Factors for Memory Foam Mattresses Under 300
First, match thickness to your use case. A thinner mattress can work for a spare room, bunk setup, or lighter body weight, while a thicker profile is usually better for nightly sleeping. Second, check whether the bed includes any cooling elements if you tend to overheat. Third, look for CertiPUR-US certification or similar safety testing for added peace of mind. Finally, pay attention to the return policy and warranty, since budget mattresses can vary a lot in long-term performance.
Who Should Buy Which Memory Foam Mattresses Under 300?
Choose a 6-inch model if you want the lowest-cost, simplest option for occasional use or a firmer feel. Go with an 8-inch mattress if you want the best all-around balance of support and value for everyday sleeping. Consider a 10-inch choice if you want a more substantial feel and are shopping for a queen or full-size bed where the budget allows.
In short, the best Memory Foam Mattresses Under 300 are the ones that balance comfort, cooling, and durability for your body type and sleep habits. Use the product list above to compare the feel and features that matter most, then choose the mattress that best fits your room, sleep style, and budget.