This card includes a quality Kraft envelope and comes blank inside for your own personal message. Dimensions - A6 Folded (basically a standard sized card & envelope). *WTF is GSM you ask? This is grams per square metre, a measure of weight for paper! To&FromCards use one of the highest GSM you will find on the market. As our cards are 100% recycled, there may be minor imperfections/fleks seen.