I really like these Flexees tops! So much more comfortable to wear than ones with a snap crotch! Kind of tricky to get on, but they fit well and do help to firm up your mid section. Just don't expect a super firm hold. But, they are comfortable! These DO NOT ride up on me - they stay put perfectly.
I really like these and wear them almost all the time when I dress up. I actually often wear a thin cotton cami under these because the synthetic fabric makes my skin uncomfortably itchy - I may be extra sensitive, though, and I would really recommend this item.