Ziploc Zip 'n Steam Meal Prep Bags, For Cooking and Steaming Food, Microwave Safe, Medium, 10 Count

Did anyone else notice in their most recent subscribe & save that this went from 3 packages to 1 package, for the same price?

Can I steam meat and vegetables together, or do i need to use two bags to do this?

What are the size of the bags?

Are these re-usable, or should they be discarded after single use?