22 x 25 mesh spaces (windows) or 45 x 51 sts before borders

Interlocking Patches can be made using any yarn/thread and an appropriately-sized hook. Documentation includes further discussion and may be downloaded separately at https://interlockingpatches.com/docs.

Sample (pictured):
Colour A: Berroco Ultra Wool Fine (black)
Colour B: Berroco Ultra Wool DK (cream)
Hook: 4.00mm
Border: Blanket Border
Dimensions: 240x270mm / 9.5x10.75in