Exodus 39:22

New Century Version

Then they made the outer robe to be worn under the holy vest. It was woven only of blue cloth.

Cross References

Exodus 39:21

They used a blue ribbon and tied the rings of the chest covering to the rings of the holy vest, connecting it to the woven belt. In this way the chest covering would not swing out from the holy vest. They did all these things the way the Lord commanded.