The ready to make envelopes are supplied flat, all that needs to be done is to stick the flaps down and put a length of double sided tape to the top flap and you have a perfect envelope.
Conqueror Laid papers are 120gsm - NO WATERMARK.
Conqueror Contour paper is 100gsm - WITH WATERMARK.
Stonemarque paper is 120gsm - HI White NO WATERMARK. Diamond White - WITH WATERMARK.