The ComfortNext Lux, a 13-inch model within the ComfortNext collection, addresses the volatility of sleep requirements by allowing users to modify firmness levels after purchase. Rather than forcing sleepers to commit to a fixed feel, the mattress utilizes Responsive Air technology to automatically adjust support as the sleeper changes positions throughout the night. This dynamic approach is designed to alleviate localized pressure on sensitive areas, including the hips, shoulders, and knees.

For couples, the mattress offers dual-side controls in queen sizes and larger, ensuring that partners with different body types or comfort preferences can maintain personalized settings. Beyond structural support, the model incorporates integrated cooling materials and app-based tracking to monitor sleep quality. The product is currently backed by a 100-night home trial and a 10-year limited warranty, reflecting a design strategy intended to accommodate shifting physical needs over time.