[Bob]

 
On the comply website, the tips that are offered that are compatible with the W2s are listed as being available in small/medium/large.  Now, on the Westone website, the available comply tips are sold as standard/short/slim.  Are the Westone comply tips specific to Westone?  I like the "short" tips, but wanted to grab some in black 

 

[KLS]

I am not sure here, but to me it seems that:
 

1. The T-100 (with sizes available of S/M/L) from Comply are similar to the standard/short from Westone. Tx-100 is the one you are looking for, the black colour tips with wax guard and a filter.
2. The slim from Westone is pretty much the same, if not exactly the same, to the P-series from Comply.