52 sts for border, 2k 2p with needles 3mm.
Switch to 3.75mm needles.
Checker: 3blue, 3 white, 3 rows and then switch colour.
In first round of checkers 2 increase to get pattern. (54sts)
Thumb opening: cast off 11 sts. In next round increase 11 sts.
Rib 2x2 at top done with 3mm needles and decreased 2 sts (52 sts).