What is Sezzle?
When you complete a purchase with Sezzle, the merchant ships your product immediately - so you get to enjoy your item before you’re finished paying for it!
Sezzle automates the remaining payments through whichever payment method you have on file, with text and email reminders before each payment is processed. You can always log into your account and change your payment method, and each order can have payments rescheduled twice, with the first one free! Additionally, if you want to pay off your orders early, you can do so at no extra cost.
You can readall the nitty gritty details over at the full Sezzle FAQ here.