Square envelopes give your mailings an elegant and creative touch. Their unusual shape stands out in the letterbox and arouses curiosity about the contents. Print and finish the envelopes with your own layout and use them to send wedding or anniversary invitations or original advertising messages on beer mats, square booklets, greeting cards and more. square 11 x 11 cm, 15.5 x 15.5 cm or 22 x 22 cm front and back with print and/or finishing, also available unprinted numerous materials, incl. 350 g white offset, 300 g matt coated paper and fine Gmund brand papers optional blind embossing or hot foil stamping (gold, silver, copper, matt white or matt black) can be stored for at least 5 years under optimal conditions 11 x 11 cm: all materials with peel-and-seal strip 15.5 x 15.5 cm: 90 g white offset with peel-and-seal strip; 300 g matt coated, 350 g white offset and all Gmund materials with peel-and-seal strip and tear strip 22 x 22 cm: 300 g matt coated, 350 g white offset and all Gmund materials with peel-and-seal strip and tear strip available from 10 pieces