I current have your Red Detail bag and and the 16 oz bottles fit in it just right. I carry, a can of In & Out, Detail Spray, Glass Cleaner and Undercarriage Spray in the main section along with a small vac. for carpet touch up. three sponges and my microfiber towels. In the one of the sides I have Leather Conditioner and VRT and the other the Metal Polish 1 & 2. In the front pocket I have a few different brushes and microfiber gloves. So if you went to the larger bottles, I would probably not be able to carry what I feel I need.