I bought this on a whim because it was on-sale and boy did it elevate my mattress. My mattress is only 2 years old so I didn't think this topper would improve much but the moment I got into bed I immediately noticed the extra softness and plush this topper offered. Even my husband noticed an immediate difference. Imagine what this would do for a 5 or even a 10 year old mattress!! It also has a secure elastic at every angle so it nice and snug on your mattress.