Therapedic Jamaica Split King Mattress with Head Up Only Base

A split king configuration consists of two separate Twin XL mattresses (each 38"w x 80"l) placed side-by-side to create a standard King-sized sleeping surface. This setup is specifically designed for use with an adjustable base, allowing each partner to independently raise or lower the head of their mattress. This is ideal for couples with different nocturnal habits, such as one partner who prefers to sit up to read while the other sleeps flat.

This mattress includes the RTG Sleep 2900 "Head Up Only" adjustable base, which allows you to customize your incline with a wireless remote. Elevating the head of the mattress is a highly effective, non-invasive way to help alleviate common sleep issues. By keeping the upper body raised, you can improve airflow to reduce snoring and utilize gravity to prevent stomach acid from rising, which helps manage the symptoms of acid reflux or GERD.

Hybrid mattresses are uniquely suited for adjustable bases because they balance flexibility with durability. This mattress features the TheraWrap 5-Zone Support System, which uses individually wrapped coils. Unlike traditional interconnected coils, these independent springs are designed to bend smoothly at the base’s articulation points without compromising the structural integrity of the mattress, ensuring long-term support even with frequent adjustments.

To ensure a cooler night's sleep—particularly in the humid or warm climates common in regions like Florida and Texas—this mattress utilizes a multi-layered cooling system. It begins with GlacierTouch fabric infused with moisture-wicking Tencel. Beneath the surface, the 5Z TheraCool QuadTech Gel is infused with copper, silver, and graphite. These materials are chosen for their high thermal conductivity, actively pulling excess heat away from your body and dispersing it to keep the sleep environment dry and comfortable.

The adjustable base included with this set features a slim 4-inch profile. Based on our general furniture knowledge, most modern adjustable bases are designed to be "zero-clearance" or slim enough to fit within standard platform, panel, or slat bed frames. However, because this setup includes two separate Twin XL components for the Split King size, we recommend verifying that your current frame does not have center storage drawers or fixed structural slats that might interfere with the motorized base's movement.

This mattress is engineered with a TheraFoam encasement, which provides a reinforced perimeter. This high-density edge support is a hallmark of premium construction, significantly increasing the usable sleep surface and preventing that "roll-off" sensation when sleeping near the edge. Furthermore, a firm edge makes it much easier and safer to transition in and out of bed, which is a key comfort factor for those with limited mobility.