Frame bags
I make frame bags for all kinds of bikes… fixies, full suspension mtb, gravel etc.
Usually these are always custom and done specifically to your bikes frame size. Many bring their bike to my studio and we measure, draw a template and discuss specs. I also have to offer one size frame bag that fits small U-lock.
It can also be ordered without seeing, but then I need a template from you, or a link to bike manufacturers page if they have blueprints of the frame for these occasions.
Usually I use Xpac VX21 for its light weight and robustness. Also cordura 1000D is really good… a bit heavier and a bit more abrasion resistant.
Prices differ depending the complexity and attachment type. You can have fixed velcro fastening, cord fastening, adjustable webbing fastening…
Full suspension MTB frame bags are most expensive ones due to it’s complexity
Size: Almost always custom
Price point: 200 - 300€ (+ shipping) / Complex MTB frames are on the 300€ end