4.5? 3.5 & 3 mm needles (US 6, 4 & 2½ ).
Round pointed yarn needle for the seams and sharp pointed for weaving in the ends.
Moss st :
3/3 rib :
Front, increase 1 st 1 st from the edges in moss st on the right side
Front, decrease 1 st, 1 st in from the edges in moss st on the right side