i didn't give it 5 stars because of two things:
1. it's not as wide as i'd have hoped. maybe that was indicated in the measurements? but, i was hoping for a pillow that'd be wide enough for an arm rest, too. 
2. it doesn't have a handle on the top for easy moving.
that said, it's great! the fabric is wonderful, the weight keeps me upright. i worked from home - in bed! - for more than 10 hours yesterday and was so comfortable, i might just do that all the time.