2 week access to certain attractions and most rec centers(Library card required)
I'm not good with explaining the details so here are the details from the official website:
Here is a list of attractions you can visit with the pass:
Swimming, fitness centers, and Pitch and Putts are included!
My interpretation is that EACH library card holder is entitled to use the 2-week pass per year. So if you have 4 card holders in your house. You can potentially use the pass for 8 weeks.