This size guide is a ruff idea of the size you will receive.  These bows are made to slide onto your pets favorite collar. Double elastic loops on the backside ensure a snug fit on the collar.   

Finished bow sizes:

X-small:  3" x 1.75"

Small: 3.5" x 2.25"

Medium: 4" x 2.5"

Large: 5" x 3"

X-Large: 5.5" x 3.75"

*As these are hand made, sizes may vary slightly up to a 1/4"