Achernar is a hat with twist stitch star patterns. In 7 sizes.

The un-stretched hat Circumference is

9.25 (11.25, 13.5, 15.75, 18, 19) 21.25 ”,
23 (28.5, 34, 40, 45.5, 48) 53.5 cm.

The height from brim
to crown is

5.5 (6.75, 7.5, 8.5, 9.5, 9.75) 10.5 ”,
13.5 (17, 19, 21.5, 24, 24.5) 26.5 cm .

So if you have oodles of littles to knit for and want matchy-ness, or you really like to customize the fit of your hats, here are lots of sizes.

and it goes really well with Taygeta too.