: High-density foam (3 lbs per cubic foot or higher) is more durable and provides better support. Budget mattresses often use lower-density foam (around 1.5–1.8 lbs/ft³), which is acceptable for guest rooms or kids but may sag faster under heavy daily use.
(starting around ) are top-rated budget options that balance support with affordability. Top Budget Foam Mattresses (2026) Mattress Model Typical Price (Twin) Trial / Warranty Siena Essential Memory Foam Best Overall Value $99 180 nights / 10-year Mainstays 8" Green Tea Tightest Budgets $99.88 90 days / varies Zinus Spa Sensations Serenity Back Sleepers $120 100 nights / 10-year Wayfair Sleep 10" Medium Side Sleepers $159.99 100 nights / 10-year How to Evaluate "Cheap" Foam buy cheap foam mattress
Finding a high-quality, cheap foam mattress is entirely possible if you prioritize and a minimum thickness of 8 inches . For the best value in 2026, the Siena Essential Memory Foam Mattress Go to product viewer dialog for this item. (starting around $99 ) and the Mainstays 8" Green Tea Memory Foam Mattress Go to product viewer dialog for this item. : High-density foam (3 lbs per cubic foot
: Many cheap foam mattresses include Green Tea (to neutralize odors) or Cooling Gel (to prevent the common "sleeping hot" issue with foam). Choose Based on Your Sleeping Position Top Budget Foam Mattresses (2026) Mattress Model Typical