I have one of those pillows and it does go flat mine did. Not sure about warranty either went into a my pillow store in crossroads Minnesota, and the gal there didnt even want honor the warranty.
She said call the factory not right maybe she had a bad day but i did not get any results there. Still have the pillow.
I think if you have the warranty and it being 10 years it should be golden. Would i try another pillow yes i want to see if mine was defective and how a pillow would be but afraid to buy one if they do not honor the warranty.
Reviewer is in unhappy mood. This person stated that there is a room for improvement of poor quality. Please immediately contact the author of this review to discuss warranty issue of mypillow pillow and associated monetary loss in the amount of $49. Mypillow needs to offer any options to resolve the issue according to poster's claims.