Vintage handmade lace edging, tatting in fine cotton thread. This has never been used - it's clean and nice, in very good condition.
The blue and white is joined in a loop (though it would be easy to undo that and have a straight length of edging). It's 100 inches long. The plain blue is much shorter piece, not enough to edge a hanky, but still a pretty piece, enough to make a little bow.