Tuft & Needle TN9.1 Split King Mattress Set with Head Up Only Base

A split king is a superior choice for urban dwellers or homes with challenging layouts. Because the set is comprised of two Twin XL mattresses and two smaller adjustable bases, it is much easier to navigate through narrow hallways, elevators, and tight staircases compared to a standard, one-piece King mattress. This modularity allows you to enjoy the footprint of a King-sized bed even in spaces with architectural constraints.

Yes, the included RTG Sleep 2900 adjustable base allows you to raise the head of the mattress using a wireless remote. This elevation is an effective way to alleviate symptoms of snoring, acid reflux (GERD), and sleep apnea by improving airflow and using gravity to prevent stomach acid from rising. Finding the right angle can significantly improve sleep quality for those with respiratory or digestive sensitivities.

This configuration is ideal for couples where one partner is a restless sleeper or works a different shift. The physical separation of the split king design naturally eliminates motion transfer between the two sides. Furthermore, the mattress itself utilizes Micro Diamond memory foam and individually wrapped coils designed to absorb movement at the source, ensuring that when one person adjusts their head position or gets out of bed, the other remains undisturbed.

This mattress features advanced cooling technology specifically designed to manage body heat. It includes a cool-to-the-touch cover and T&N AdaptiveCool™ gel foam to help absorb heat. Additionally, the Micro Diamond memory foam upgrade is engineered to conduct and transfer heat away from the body, maintaining a more consistent and comfortable temperature throughout the night.

This hybrid mattress is engineered for both flexibility and durability, combining 1,000-density individually wrapped coils with a responsive micro-coil upgrade. Unlike traditional innersprings, these independent coils and premium foam layers—including T&N AdaptiveCool™ gel foam—allow the mattress to contour smoothly to the head-up positions of the adjustable base without compromising the internal structure or support.

The split design is intentional to provide each sleeper with personalized control and total motion isolation. To minimize the feel of the center seam, this mattress is constructed with a foam-encased seating edge that provides corner-to-corner support, helping the two mattresses remain flush. Based on our expertise, we recommend using a king-sized flat sheet and comforter over individual Twin XL fitted sheets to maintain a unified look and feel while still allowing independent movement.