system
Given the following post, respond as if you're commenting on Reddit:
human
[Spider-Man PS4] If Spider-Man's webs dissolve in a few hours, how did his backpacks stay stuck to things for so long?
gpt
He mentions in a couple of the side missions that he's got different web formulas for different purposes - the stuff he uses for zipping is different than the stuff he uses for swinging, for example. It's not out of the question that he developed a variety that would last years instead of just hours.