Dad has large hands but skinny wrists, so ribbing worked best for a cozy fit.

Knit from fingers down.
CO32 on dpns.
K2p2 ribbing around for 8.5 cm.
Then knit back and forth in pattern for 7.5cm (thumb hole).
Rejoin in round and k2p2 around until total length is 22.5 cm from cast on edge or you reach desired length.
BO in pattern.

To knit thumb:
Starting at base of thumb (towards wrist, not fingertips), pick up 16 sts around thumb opening.
K1p1. then wrap and turn.
K1p2k1. wrap and turn.
P1 k2 p2 k1. Wrap and turn.
Continue to follow k2p2 ribbing, adding 2 stitches beyond each previous wrap and turn, until all 8 stitches are worked on the first half of the thumb opening.
Then instead of w&t, continue around to beginning of round.
K2 p2tog around.
K2 p1 around.
K2tog p1 around.
K1p1 around. repeat this last round 3 more times.
Bind off in pattern.