Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How comfortable is the mattress? Our RV mattress is very hard and we are looking for a cooling memory mattress that will assist with comfort.
Document: This mattress topper fit perfectly. It had a nice structure to it, laid out smoothly and stayed put. It added a very comfortable layer to my camper mattress. It also looks very nice.
Perfect fit, haven't gone camping yet with it , will rate its comfort level on another date. Arrived promptly and was packed very well.
Really nice product. Fits perfectly and makes the bed feel great! Had an old mattress and this made it feelbrand new
Very comfortable. Perfect fit and surprisingly cool. It shipped right away and is worth the expense. Took our first camping trip and slept like a baby.
ordered this for use in my camper and it has made a huge difference in how I feel in the morning.
Answer: It helps, but it isn't a drastic difference.