Passing description to Stripe

I have test payments successfully showing up in Stripe but the only information passed over is the customer's email address and the amount. So it's unsure from the Stripe admin what the customer has purchased. The description field is listed as "Order #X" - can I customise that in stripe_payment_form.html?

data-description="Items (<perch:shop id="amount_formatted" escape="true" />)" seems to just show up at the top of the payment box so I don't think that one can help.