Is this pad enough for heavy overnight leakage?

It is TENA's highest-coverage overnight pad shape, with extra width front and back. It suits heavy leakage better than daytime liners, but very heavy flow may still need a pull-up.

How is it different from TENA's daytime pads?

It is longer and wider at both ends for lying down, and holds more. Daytime pads are thinner and shaped for sitting and walking.

Does it stay in place on its own?

No. It is a pad, so it relies on close-fitting underwear to hold it. Loose underwear lets it shift when you turn.

Can I use it with any underwear?

It works best with snug briefs that hold the pad flat. Very loose or silky underwear gives it less grip.

Is it a pull-up or a pad?

It is a flat pad placed inside underwear, not a pull-up pant. If you want something that stays on without underwear, a TENA pull-up is the alternative.