Which Wolfman bag do you have? I was disappointed when they closed their shop in Longmont, Colorado, moved production to China, and dropped the lifetime warranty with the newer WP series of gear. Luckily my older Wolfman Blackhawk sewn tank bag is holding up great.
I bought the
Wolfman Expedition Dry Duffel Bag WP, size SM (40L).
I was inspired by
this video from Quasimotard, but the DrySpec bag wasn't on sale when I was trying to buy it - nearly double the price. I also compared this to the Givi luggage that Ang from SomeGuyRides used which he does say which one he has somewhere in his 25-26h of content.
If I remember correctly what I did was snap a screenshot of the video, and project the number of pixels to determine which bag he actually had on the bike based on length of the bag and length of the CT125 rear rack. I don't like that it hangs that far back off the rear, so I looked for the next size down. It seems that most other people like running 50L bags, and are ok with hanging stuff over the sides and back. So if nothing else, anyone reading this who seeks advice, 50L seems to be a pretty sweet spot for most people.
A while back I purchased a
Gonex 40L duffel bag that collapses down for storage as the primary feature of the duffel bag as one of my go-bags for going on car trips, etc. It's worth noting that in order to achieve the folding pattern it has, it has to adhere to very strict L x W x H ratio requirements. I dug that out of storage and compared it to the offerings. Then slapped it on the back of the CT125 and checked to see that nothing hung over points on the bike in ways I didn't like. Took a bunch of Amazon boxes and taped them together to see roughly how various offerings would actually sit compared to my Gonex bag. Found a bunch of bags in the same capacity size and sorted them by features I liked the most and price. Wolfman came out as the top contender, but I never factored warranty and production location into the purchase process. As they say, YMMV - I feel like given the same situation, you'd choose someone else, and we'd both be extremely happy with our individual purchases for different reasons.
My choice was driven largely by not wanting to have stuff hanging over the sides, and that I specifically own bikepacking gear - stuff designed to fit in a handlebar roll, often with shorter tent poles, more compact design, etc. Maybe I'm shooting myself in the foot here, but I also feel like most people carry too much stuff on their bikes. My gear is designed to be carted by bicycle so I want to make sure it's not crazy heavy, crazy big, etc.