After looking at the bags you made, I have to say that I think you are doing an incredible job and make beautiful bags! Looks like they are already made to be used with racks and/or decaleur. I might suggest a couple of velcro strips on the top to attach a map pocket to. Maybe you could have a couple of decorative leather strips or pieces with velcro on the back of them to put on when map pocket is not being used to keep the bag looking nice. They are very good looking bags! Perhaps some pockets on the side. Just flat pockets is enough in my opinion. I have a bag with pockets on the side like I suggest and will try to get a picture up here soon. Pockets (1).jpg Another handlebar bag I have has a small pocket on the inside sort of hanging from near the top; it runs the width of the bag on the side closest to the rider. It is very handy for putting small items in so they are not floating around in the bottom under everything else. I'll get a pic of that up too. Pockets (3).jpg

All in all, I think you are already doing great. As for seat bags, I like the Carradice design of the Nelson long flap and think that design in various sizes is good. For waterproofing, oilcloth canvas or maybe oilcloth hemp cloth if there is such a thing would probably be good.

I also enjoyed your blog. Keep up the good work.