16 x 18 mesh spaces (windows) or 33 x 37 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 DK (black)
Colour B: Patons Classic Wool Worsted (orange)
Hook: 4.00mm
Border: Blanket Border
Dimensions: 167x197mm / 6.5x7.75in