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 a better quality of sleep. 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 also helping to adjust the mattress's firmness to better suit your needs. Regarding its care, after consulting the manufacturer's instructions, it is recommended to dry clean annually and air it out weekly.