I don't know how it's possible for these undies to have no VPL AND not turn into a thong... but it is. They hug and stay put! I love these for casual wear under leggings, jeans, anything. The fabric feels luxe and durable. And I love the black cotton inner liner for the gusset.
They did ride up under my compressive running tights during a run so they probably won't be my go-to exercise pair. But they're all I want to wear otherwise.
I run between a S and a M for nearly all bottoms, and the M fits my ~140lb 5'6'' athletic build perfectly.
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs small, 0 is True to size and 2 is Runs big