It was four-square; they made the breastplate double; a span was the length thereof, and a span the breadth thereof, being double.
King James Version (KJV) - Exodus 39:9 >It was foursquare; they made the breastplate double: a span [was] the length thereof, and a span the breadth thereof, [being] doubled.
Berean Study Bible (BSB) - Exodus 39:9 >It was square when folded over double, a span long and a span wide.