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!

I bought this as a more portable substitute to using a box fan to help me sleep. While the noise of a box fan is soothing, the noise of this device is annoying! Not only is it too loud, even on low, but there's a very unpleasant mixture of high fan sounds and low motor sounds, as noted in other 1-star reviews. I returned it right away. I'm really puzzled why so many reviewers seem to like it. I will try one of the electronic machines next.

I bought this for my son's nursery. We live in the city and this device does a wonderful job drowning out the sounds!

My "significant other" offered to take me and my two sweet Granddaughters (3 & 5 y.o.) to Chicago for a long weekend, but I seriously considered not going because I knew there was NO WAY the 4 of us could spend the night in the same hotel room due to his EXTREMELY LOUD snoring -- we'd ALL be horribly sleep-deprived! After at least an hour of research on the internet for "white noise machines" at the 11th hour, it was clear this was the winner hands down, and I ordered it (OVERNIGHT DELIVERY...cost me an extra $25.00!), but I can't tell you how well worth it it was!! Worth EVERY PENNY! We ALL slept like babies all 3 nights! Now I have to give mine to my daughter because my Granddaughters don't like the fan anymore! I just ordered one for her. BUY IT! You won't be sorry!!!

I was hoping to use this machine to drown out people talking 10 feet away from my desk, but sadly it had no impact whatsoever.

This is my third Marpac machine, and Ilike them,but this latest model suffers from a high pitched whezzing sound that would besure to keep my awake