Honestly, I didn't protect it in any way...I literally only Apple Garde sprayed the leather parts first...not really worrying about a little getting on the canvas..then sprayed the Scotchgarde on the Canvas. All doing this outside of course...I have a covered lanai area that has empty plant hooks...so, I hang my bags on hangers on the plant hooks and spray away. Be sure to be a good amount away about 8 inches away from the bag and spray (try not to inhale the fumes

I hold my breath.) Spray lightly not to soak the bag. I let dry for about 30 minutes.
Happy Cruising!!