Tummy control knicks

[Squaddielife]

Can anyone recommend some knickers that flatten the tummy?
I have spanx already but find they lift the bum rather than flatten the tum. Plus they seem so high waisted that it actually makes the tum more rounded. I have some exercise legging with a really wide waistband which really flatters but can't find any pants that do the same thing! help !

M and S shape wear section. Not their equivalent of Spanx, ie costing quite a lot but their granny pants. Some are white cotton, sold in pairs. There are ones with lace, but not in an entirely good way. Anyway, they do seem to push the dough in.