14 x 14 mesh spaces (windows) or 29 x 29 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: Unknown worsted weight wool (navy)
Colour B: Loops & Threads Everyday Cotton (teal)
Hook: 4.00mm
Border: Blanket Border (round corners)
Dimensions: 190x190mm / 7.5x7.5in