160gsm card provide a rigid feel to your card, in addition you can use with most printers. Gsm refers to the thickness of card (grams per square metre).
20 multicoloured sheets. 5 Colours: Blue, Yellow, Red, Green, Orange.
A2 size (420 x 594 mm, 42.0 x 59.4 cm, 16.5 x 23.4 inches) paper is a very specific size, A2 paper sheet is four times the size of an A4 sheet. A2 size paper is mostly used for large format projects.