Size refers to belt length not bag dimensions. We have two main sizes:

Small/Medium

Size 0 – 12 (AU)

Size 0 – 8 (US)

Medium/Large

Size 14 – 20 (AU)

Size 10 – 18 (US)

In between two sizes? Generally the smaller size is a better fit.

Want to wear your bag cross body? The longer strap may be a better choice (and it can always be cut down if needed).

Any questions?