Sleep Number ComfortMode Named Top Adjustable Mattress of 2026

The ComfortMode distinguishes itself through air-chamber technology that allows users to adjust firmness levels via remote. Unlike traditional mattresses that remain static after purchase, this model accommodates changing needs resulting from injuries, shifting preferences, or partner requirements. Dual-side models enable couples to customize their respective halves independently, effectively solving common conflicts over sleep surface preferences.

Beyond manual adjustments, the mattress features Responsive Air technology, which detects movement throughout the night to provide automated support. This integration is designed to assist restless sleepers who frequently transition between back, side, and stomach positions. The construction utilizes 3.5 inches of foam atop the air chambers, incorporating cooling materials directly into the upper layers to manage temperature and pressure relief simultaneously.

Sleep Number supports the product with a 100-night trial period and a 10-year limited warranty. While the mattress is compatible with various foundations, including adjustable bases, the company recommends a firm, flat surface to ensure proper performance. The ComfortMode is available in a full range of sizes, from Twin to California King, with potential eligibility for HSA or FSA funding for qualified buyers.