I didn't think that a 2 inch memory foam mattress topper that was cooling would actually make a difference, but let me tell you, it's amazing. The memory foam added quite a bit of comfort to my bed, and I feel much more comfortable at night. The cooling part? Wow. Once you lay down, you'll feel the chill. Almost immediately too. I get hot in the middle of the night, and just adjusting my position in bed causes a cool sensation and I start cooling down within seconds. I cannot wait to see how well this topper does in the summer! I absolutely love this, and feel so much more rested in the morning.