Make sure you're logged into a Kickstarter account (or create one first). On the campaign page, click "Back this project" or open the Rewards tab to see what's available. Choose a reward tier, or "Pledge without a reward" to support without receiving anything — if your reward ships, select your country before continuing. You'll have a chance to add any available add-ons or bonus support next.
Review everything on the pledge summary page, then enter payment and confirm. Note that Kickstarter only allows one card per pledge — it can't be split across multiple payment methods. You'll get a confirmation email once your pledge goes through; if the campaign is successfully funded, your card is charged when it ends (see our Late Pledges article for what happens if you back after that). If you don't get a confirmation, your pledge likely didn't go through — try again, and reach out to us at contact@tortugabackpacks.com if it keeps happening.