EZBreeze porch windows: What's the clear stretchy plastic used?

Kristin M
11 days ago

We need simple, clear storm panels for our screen porch. No heat retention needed; we just want to keep snow drifts off the floor and furniture over the VT winter. Maintaining our clear view is most important.

Though we dont want to go with the EZ Breeze windows, we'd like to source that kind of heavy-duty (ish), clear, stretchy plastic to make our own removeable storm panels. Can anyone tell me what that material is and where i can find it, please?