The full pattern name is Triangular Shawl with Frill in Lace.

This is a medium-sized triangular shawl, knit in garter stitch, with a feather and fan lace frill edge.

The author notes that it’s a quick/easy shawl, and that gauge will determine airiness… knit too tightly and it’ll be small and not as light and airy, knit too loosely and it may be limp and shapeless.