Smooth white, square All Board Envelopes, measuring 195mm x 195mm and made from premium grade 500 micron, 350gsm, GD2 fully coated chipboard. The envelopes are easy to seal using their peel and seal strip, which is on a pre-folded flap, so they are simple to close too. These envelopes are ideal to keep paper, card and slim items protected during despatch. The smooth coated outer surface can be printed on and bonds well with labels.