These are twined knitted mittens using the simplest way of patterning: two colours making stripes, and making checkers by being reversed every second row.
The main part of the mitten is striped. I used checkers on the cuff ...
and on the increases for the thumb. The increases are made on both side of the thumb gore every second row.
The cast-on is one that I have learned from Karin Kahnlund. I repeated the principle for the cast-on effect just before I started the increases for the thumb - to mark the end of the cuff.
The yarn used is spun at Wålstedts. The fleece used is from the breed Värmlandsfår - natural colours, except for the yellow that I dyed.