What material are these envelopes made of? null

These envelopes are made of paper.

“What material are these envelopes made of?”

This question is for: Staples - Self Seal Security Tinted #10 Double Window Envelopes, 4 1/8" x 9 1/2", 500/Box - White

This question was generated by AI based on customer and product data.

These envelopes are made of paper.
This answer was generated by AI based on customer and product data.