The latex has a real stretch to it, so it hugs my waist without digging in, and the short bit below the waist stays put when I sit. Wore it under a sheer blouse all evening and the four straps never once slipped off my shoulders.
The four straps sit right where they should and don't dig into my shoulders at all. The corselette holds its shape from shoulders to waist, and the short bit below the waist is a nice touch. Wore it for a full evening and it stayed put.