"Ridgeless" strings?

[syciprider]

Hi string gurus. I bought a new (used) bass tonight and it came with these strings that feel smooth to the touch. The ridges are there but I can't feel them when I play. I would like to switch all my basses to these strings but I don't know what kind they are?

They look like D Addarios. I say that because they have color coded ends.

Any help you can extend to help me ID these strings will be greatly appreciated.

TIA.

[PunkerTrav]

D'Addario HalfRounds maybe?

[gilbert46]

sounds like any flat round, or the half wounds which are traditional strings ground down to be flat.

[JimmyM]

The color coding is a definite D'addario giveaway. So they are either Halfrounds or Chromes. If you can see a little bit of space between the windings, they're Halfrounds. If you can't, they're Chromes.

[SGT. Pepper]

Try Smith Compressors they are cool too.