Aida fabric is a cotton fabric where the threads are intertwined in flat squares like a wicker basket. Aida clearly shows holes in the corners of future crosses. This is the ideal canvas for beginners or for embroidery of scenes, where the background is sewn completely.
Aida is easy to embroider, because the cells are clearly visible. You can also embroider on it without heels, as it is rigid enough.
Aida is not suitable if the scheme has 1/2 or 3/4 crosses and countless backstitch, in this case it is better to choose the evenweave or linen.