I'm going to recommend the following. http://www.nadachair.com/slouchbuster.html It's called the Nada Chair. My mom bought me one when I was in highschool, and the thing kicked so much ass, you sit in a chair, or on the ground and it forces you to sit upright. i'm gonna search through it in storage, and if I can't find it i'm just gonna buy another one. it's worth it, and for those with office jobs who slouch over their computers, it would be a good idea.