One thing I've learned working in the patch world for years is when it comes to patches or 🅱️enises, it doesn't matter. 3 Inches is average.

Specs:

• Material: Thick, 3D, PVC Patch
• Size: ~3"W
• Backing: Hook Velcro backing sewn into patch. Separate loop backing also included.
• Individually wrapped in plastic bag.