Baby Blue #2 gauge invisible zipper.
This is a very pretty, soft or light blue.
Use this closed bottom invisible or concealed zipper in light fabrics or bride's maid dresses.
Closed bottom means that the bottom of the zipper is sealed.
Invisible zippers are easy to shorten as you sew the zipper in. These zippers have top stops which are sewn into the garment at the top then the zipper is shortened at the bottom.