Helix Midnight Luxe Split King Mattress Set with Head Up Only Base

Yes, this mattress is designed with a medium feel and three layers of high-density foam specifically chosen for pressure relief. Our design expertise highlights the importance of the zoned lumbar support and the plush pillow top, which work together to cradle the shoulders and hips while maintaining proper spinal alignment—a critical factor for side sleepers.

A split king configuration offers the ultimate in individualized comfort and motion isolation. Because this set consists of two separate mattresses on independent adjustable bases, one partner can raise the head to read or manage snoring while the other sleeps undisturbed in a flat position. This setup effectively eliminates motion transfer across the bed, making it an excellent solution for light sleepers.

For a split king, you will typically need two Twin XL fitted sheets to allow the two mattresses to move independently on their adjustable bases. You can then use a standard King-sized flat sheet and comforter across the top to maintain a unified look. With a total profile height of approximately 17.5 inches (13.5-inch mattress and 4-inch base), we recommend deep-pocket sheets for the most secure fit.

This mattress is specifically engineered for temperature regulation, featuring an upgraded GlacioTex Cooling Cover that is cool to the touch. The hybrid design further enhances breathability; unlike solid foam beds, the individually wrapped steel coils allow for significant airflow through the core of the mattress, helping to dissipate body heat throughout the night.

The RTG Sleep 2900 adjustable base allows you to raise the head of the mattress using a wireless remote. This feature is highly beneficial for lifestyle activities like watching TV or reading in bed, but it also serves functional health purposes. Elevating the head can help reduce symptoms of acid reflux and decrease snoring by opening up the airways.

Based on our 90-night Mattress Sleep Trial, we recommend an initial 30-night adjustment period to allow your body to get used to the new support system. If you are still not satisfied after 30 days, you can take advantage of a one-time exchange for a different mattress within the 90-day window. Please note that exchange fees apply and the mattress must be in good condition.

This model features a fully reinforced perimeter and specialized edge construction. This ensures a consistent sleep surface from edge to edge and prevents the "roll-off" sensation common in many foam-based mattresses. The reinforced edges also provide a stable, supportive seat when you are sitting on the side of the bed.