ESV: It was square. They made the breastpiece doubled, a span its length and a span its breadth when doubled.
NIV: It was square—a span long and a span wide—and folded double.
NASB: It was square; they made the breastpiece folded double, a span long and a span wide when folded double.
CSB: They made the breastpiece square and folded double, nine inches long and nine inches wide.
NLT: He made the chestpiece of a single piece of cloth folded to form a pouch nine inches square.
KJV: It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being doubled.
NKJV: They made the breastplate square by doubling it; a span was its length and a span its width when doubled.