Numbers 4:10
They will put it and all its vessels inside a covering of {fine leather} and put it on the carrying frame.
Numbers 4:6
They will put on it a covering of {fine leather}, and they will spread a cloth of perfect blue over it, and they will place its poles.
Numbers 4:12
They will take all the vessels of the cultic service with which they serve in the sanctuary and put [them] on a blue cloth, and they will cover them with a covering of {fine leather}; and they will put [them] on the carrying frame.
Treasury of Scripture Knowledge
Summary
And they shall put it and all the vessels thereof within a covering of badgers' skins, and shall put it upon a bar.
General references
Bible References
General references
Numbers 4:6
They will put on it a covering of {fine leather}, and they will spread a cloth of perfect blue over it, and they will place its poles.