🌌 Sleep Like Royalty with Marine Moon! 360° elastic sides ensure a snug fit on any mattress type. Easily portable and backed by a 30-night risk-free trial! Enjoy breathable, odor-free sleep with advanced temperature regulation. Experience cloud-like comfort without breaking the bank! 50% thicker for unparalleled support where you need it most. 3-inch thickness 400TC breathable fabric Fits 21" mattresses The Marine Moon King Mattress Topper is a plush, hotel-quality down alternative topper designed to enhance your sleep experience. With a thickness of over 3 inches and a breathable 400TC fabric, it provides optimal comfort and support for all sleeping positions. Its unique non-shifting elastic pocket fits mattresses up to 21 inches thick, making it versatile for various mattress types. Ideal for renters, this topper is easy to store and move, and comes with a 30-night trial for a risk-free experience.