All of these pearlescent cards are 300gsm apart from Antique Gold, Lapislazuli and Mars which are 285gsm. All are double sided.
If you plan to print on these please test first by buying just one or two. They will be difficult to print on inkjet printers. We do offer a printing service on these cards at very reasonable rates. Please email or phone us for details, we just need to know the quantities and how many inserts to be able to give a price.