The mattress topper is placed on top of the main mattress to enhance the mattress's performance and improve its feel by offering comfort and softness for better sleep quality. Key advantages include that it extends the life of the mattress by protecting it from wear and tear and that it absorbs more shocks, while it also helps in changing the mattress's firmness to better suit your needs. Regarding its care, after consulting the manufacturer's instructions, dry cleaning is recommended on an annual basis and weekly airing.