The San Diego Blood Bank returns to Comic-Con and the Manchester Hyatt with their annual Robert A. Heinlein Blood Drive. Not only is this an awesome opportunity to give blood to help save lives — but you also typically receive a fun t-shirt as a thank you.

Appointments are now available for Wednesday – Sunday during the convention, which can be booked at the links below. Walk-ins are also welcome, and no convention badge is needed to donate. Donation time varies by person, but allow at least an hour of your time for check-in and blood draw.

Will you be donating this year? Let us know in the comments below: