HF-A3 Hanger Holder A3 (40% old paper pulp formula)
Just clip the documents as is. Classifies by headers so you can easily access the documents you need.
The headers can also be slider to view them as well.
The header is replaceable so you can change the card again and again.
The cover has 16 holes for "fastener". It also has an INDEX writing field.
Can be used with fasteners to create a hole in your documents.
GPN Eco product is listed here.