White 2pBasics 8.5 Square (8-1/2-x-8-1/2) Square Envelopes 25-pk - 104 GSM (28/70lb Text) PaperPapers Economical Square Envelopes -Business, Social and DIY mailing Envelopes Color name: White Opaque 96B Size: 8.5 Square (8-1/2-x-8-1/2) - All square envelopes require additional postage to mail. Inserts should be smaller than envelope dimensions 10% Recycled - Smooth Finish Envelopes converted from paper basis: 104 GSM (28/70lb Text) Flap: Moisten to seal