TWIN XL Simmons Beautyrest Silver Marseilles Hybrid Plush Mattress Foundation Type:No Foundation so your body keeps the

so your body keeps the support it needs while still feeling cozy

Patented and lab-certified technologies block liquids

Choice of foundation types and heights

Relax with 2 programmable presets lounge positions or use the Zero Gravity pre-set for a weightless zen-like experience

Large — 11 inches wide

TWIN XL Simmons Beautyrest Silver Marseilles Hybrid Plush Mattress Foundation Type:No Foundation so your body keeps theMATTRESS ONLY This hybrid mattress features both memory foam and innerspring coils. The top comfort layer features 1" DualCool Technology and contains natural silver, designed to move heat away from the surface helping one to sleep cooler and more comfortable. The middle contour layer was crafted to conform and reduce pressure points, allowing for a deeper more restful sleep. It is also ventilated to maximize airflow, preventing heat from pooling.