At Lucid, we make beds for the whole family— because when you wake up feeling your best, your family gets the best version of you too. The Lucid 4-inch Bamboo Charcoal Memory Foam Mattress Topper is an affordable way to transform a firm mattress into a plush experience. The four inches of responsive memory foam cradle your body with a plush “sink-in” feeling like a cloud. Designed to fit, a King size mattress topper perfectly complements a King mattress. And the bamboo charcoal infusion provides temperature regulation, and moisture wicking and odor reducing properties to maintain a fresh sleep environment. The foam topper is ventilated to promote air transfer, ensuring a comfortable sleep climate and all Lucid memory foam is CertiPur-US Certified for safety and performance. For shipping convenience, the topper is shipped directly to your door in an easy-to-carry box. Comfort awaits.