10 x 22 mesh spaces (windows) or 21 x 45 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: Patons Classic Wool Worsted (dark grey)
Colour B: Buttercream Luxe Craft Roving (light grey)
Hook: 5.00mm
Border: Blanket Border (round corners)
Dimensions: 150x317mm / 6x12.5in