The company has not given any specifics regarding weight restrictions, though one would expect this information is forthcoming as most drones can only carry a few pounds of cargo during flight. 

First announced in 2013 by former CEO Jeff Bezos, this program has seen its share of problems, with eight crashes reported at testing sites in the last year, according to various reports. Additionally, analysts have expressed doubt as to the usefulness of drone deliveries over standard road deliveries.