As a part of the most advanced collection yet, Beautyrest Black® C-Class offers up to 21% more support where your body needs it the most.* With help from new plant-based cooling technology, the collection provides up to 18% more cooling power to keep you comfortable as you fall asleep and all night long.** In addition to support and cooling systems, it includes comfort and pressure-relieving upgrades for up to 18% more overall pressure relief than Beautyrest Black® L-Class models. A luxurious layer, made with silk, alpaca and cashmere provides unmatched comfort and breathability, while Self-Response™ Latex ensures individualized all-over support. And the Beautyrest Black Motion Base is designed with furniture-like upholstery and sleek form, pairing perfectly with your mattress. It features a smooth-motion motor, massage capabilities, Amazon Alexa or Google Home device compatibility and under bed lighting. *in the center-third of mattress, exact percentage varies by model **vs. Harmony Lux Collection for the first 20 minutes