I'm 6'1 and I bought it because I like to sleep on my side and being my size my knees bang into each other when I'm sleeping alone.  This pillow has a good amount of give to it so it takes a bit to conform to your body, but when it does, it keeps you in place which allows for a good night's sleep.  I recommend it.  Other reviews are right, you need to let it inflate for a day by just leaving it alone and then it's good to go.