Does anyone know or recommend a case for Nintendo DS?

I'd like a case that can be able to fit in my pocket. Preferably lether and I can play my DS when it's still inside the case.Does anyone know or recommend a case for Nintendo DS?
well having a case is always more secure, so i would buy a case, i dont have a ds, but i have a psp, and you can actually tell after a while that there are dents and scratchesDoes anyone know or recommend a case for Nintendo DS?
you could always just get one of those extra skins for you ds that go over easily and protects the cover.

good makeup