Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful!!! My prized possession!

I have been using fans or humidifiers to assist with sleeping for years. This was a nightmare because I did not sleep a wink when traveling. The marpac is so small and makes a relaxing "whoosing" sound of a fan. It is very well built and there are no repetitive sounds. The sound can be adjusted and there is a low and high setting. I do wish the sound could go a little higher but this is clearly on the of best machines on the market. It about the circumference of a dessert plate and can easily be taken when traveling. Dont' waste your money on cheap imitations!