King NM® Memory Foam Mattresses
NM mattresses are National Mattress's own line — quality construction at honest, direct prices across firmness levels and builds. Compare every option below by feel, size, and price.
Shop memory foam mattresses from Tempur-Pedic, Serta iComfort, Sealy Cocoon, NM, and Chirofoam at National Mattress, available in Single/Twin through King across a range of budgets. Our wide range of models includes graphite-infused, gel-infused, and TEMPUR® material options in extra firm, firm, medium, and plush comfort levels. Every memory foam mattress features CertiPUR-US® certified foam, pressure point relief, and cooling technology. Most models are manufactured in Canadian factories, ship free across Canada, and are covered by our sleep trial and backed by the manufacturer warranty terms.
How to Choose the Right Memory Foam Mattress
Memory foam mattresses contour to your body shape, relieving pressure at the shoulders, hips, and lower back while absorbing motion so partner movement doesn't transfer across the bed. The key decision factors are foam density, firmness level, and cooling technology. Foam density and firmness describe different things. Compare density within the same foam type: a polyfoam density figure is not a memory-foam durability threshold. National Mattress carries memory foam models from Tempur-Pedic, Serta iComfort, Sealy Cocoon, Chirofoam, and our own NM Cozy series in firmness levels from extra firm to plush.
If you sleep hot, compare airflow through the foam and the cover construction. Gel infusion can delay initial warming, but sustained ventilation depends on airflow rather than the infusion. Side sleepers can start with medium or plush for shoulder and hip cushioning. Back sleepers can compare medium to firm; stomach sleepers generally need a firmer surface to limit hip sinkage. Over 98% of our memory foam mattresses are adjustable base compatible, and all use CertiPUR-US® certified foam.
Cooling Technology
Graphite-infused, gel-infused, and CoolFeel™ cover options across iComfort, TEMPUR®, and Sealy Cocoon collections to manage sleep temperature.
Low Motion Transfer
Memory foam absorbs movement rather than transferring it, ideal for couples and light sleepers who are disturbed by partner movement.
Pressure Point Relief
Body-contouring foam cradles hips, shoulders, and joints to reduce pressure points, a key benefit for side sleepers and those with joint discomfort.
Canadian-Made
Over 72% of our memory foam mattresses are manufactured in Canadian factories with free delivery and manufacturer warranty coverage.
Frequently Asked Questions About Memory Foam Mattresses
What is the difference between memory foam and regular foam mattresses?
Do memory foam mattresses sleep hot?
How long does a memory foam mattress last?
Are memory foam mattresses good for back pain?
Can I use a memory foam mattress on an adjustable base?
Does National Mattress offer a sleep trial on memory foam mattresses?
Not Sure Which Memory Foam Mattress Is Right for You?
Our non-commissioned sleep experts can help you compare foam types, firmness levels, and brands, no sales pressure, just honest guidance.
Upgrade your sleep at National Mattress
Discover a mattress that transforms your sleep into a truly rejuvenating experience. We offer a wide variety of options to suit every sleep style and preference, ensuring a better night's sleep.
Why Choose Us?
- Variety: From plush to firm, we have options for every body type and sleep style.
- Quality: Trusted brands and top-notch materials for long-lasting comfort.
- Sleep Trials & Warranties: Enjoy peace of mind with flexible trials and warranties.
- Expert Advice: Get personalized recommendations from our sleep specialists.
Mattress Selection Includes
- Memory Foam: Contours to your body for personalized comfort and pressure relief.
- Hybrid: Combines responsive springs with foam for balanced support and comfort.
- Innerspring: Provides firm support, bounce, and cooling airflow.
- Latex: Hypoallergenic, eco-friendly, and exceptionally comfortable.
- Adjustable Beds: Customize your sleep position for optimal comfort.
