The decreases are designed to maintain the relatively unbroken line of the ribs through the crown. Reversible so it can be rolled up at the rim.

Needles:
US 8 circular and/or dpn

Gauge:
6 stitches + 6 rows = 1 inch
in twisted rib stitch.

Yarn:
Worsted weight or slightly heavier, approx 100 yds
(subtle striped version shown is made with Cascade Yarns Eco Alpaca - 1705 Vanilla)

Size:
Adult / Unisex
This hat runs a bit long to fit down over the ears and forehead. - 9 in height, 8 in wide - very stretchy.