Making her comfy (Patreon)

Piece from the sketch dump from earlier in the month. Took a while to decide who to have Kat putting in the inflated sack, and settled on Fim's Sid.  Also tossed Erin in there too so that it was more visibly Sid.

This is getting colored at some point just so I can color the sack.  Make it shiny and smooth. Yeh.