Marked "King for mattress 78" x 80"

Actually I just measured, and while they are labeled "King" the measurements are:

90" wide x 98" long, which is a little less than contemporary sheets

So you decide!

Nice big piece of fabric, though. Would also make a nice quilt back.

Clean, sturdy fabric

Made in USA

The feathering of threads on one part of the selvedge is not a hole, and is not apparent on back, I think it could be trimmed.