None. The R1 fits only on The X-Metal Metal Vault. The X-Metal soft vault which is slightly bigger than a Oakley soft vault still won't fit the R1. Or then again, what do I know?
That's weird IMHO. I have 3 X-metal soft vault, none properly fits my R1, but it is a soft vault, forcing the RI inside will do,but too tight. I won't risk my R1 though. Well, I guess things work out differently for different people.
(I actually ended having 3 soft vaults,one each supposedly for Juliet, R1 and the free one from XS, but R1 did not fit, so I allocated it for the Penny and the X-Metal metal vault is the only one case for R1.)