85 HDC
will not do decreases and will add ribbing

FHDC
RHDC
DC in BBL

repeat the following 2 row repeat for the rib 8x:
RHDC
DC in BBL

Then RHDC,
Final row, DC2Tog in BBL, DC in BBL last stitch, FO leaving long tail. Weave the tail in and out of each stitch of the last round and pull tight to close. Stitch a few stitches to secure and close up opening.
10 ribs total

body of hat worked up faster than Worm on a Hook

ribbing is 15 stitches ss in blo
use something to pick the first and last stitches of the row I used a mechanical pencil with no more lead
make sure to count your stitches
2 rows one ss in edge, 1 row 2 ss in edge
Finish with the row at the edge that connects
SS in edge
do not FO
hold two right sides together
turn
ss through both sides of work, BLO on side facing you, FLO on the other side
FO
ribbing took around 4 hours