When you order a frame bag, I will contact you requesting a couple pictures and some information about your bike. I will need to know the year, make/model and size of your bike, and I will need two pictures that look just like the following ones.
The pictures need to have a tape measure clearly visible in the picture. The easiest was is to tape it to your top tube and down tube. Please use one with inches. The photos need to be focused and clear so when I zoom in I can see the numbers on the tape measure.
Take two photos, one of the whole bike and one of the main triangle. The photos should be centred, clear and focused, and taken facing directly to the bike, straight on. Crouch down to take the photos so you are at the same level as the bike.
Photos should look like this: