I have knitted and felted mittens in sapphire yarn. These were a little too much felted and is slightly too small for me. I knitted ladies size and they are customizable enough to medium woman's hands. 


I used this framgangangsmåten of these:
Yarn: sapphire yarn from Vicious with elastic tension: 23 sts = 10 cm on the needle 3.5 to 4 mm.
Needles: 6 mm
Cast on 49 (women) or 56 (men) and the benefit of four pins. Knit around.
Knit 44 rounds.
Knit the thumb line 12 m for women, 14 m for men's glove, with the remaining yarn in a different color.
On these mittens I took the 10 stitches and the thumb was tight in the beginning so I'm going for 14 stitches next time, but I have pretty big hands
Knit 29 rounds
So start felling.
-Knit 4 rows. without trap.
K-4 m 2 together round. out.
-Knit 3 rounds. without trap.
K-3 with 2 rounds together. out.
Knit 2-0mg.
-Knit 2 sts together two rounds. Out.
-Knit 1 round.
-Knit 2 sts together round. out.
-Take the stitches on a thread - tight.
Thumb:
-Take oppm.og knit 20 rounds.
-Cast as the glove but no round. in between.
Edited by felting - you can conveniently start felling thumb turns 18 this way:
Knit 5 m 2 together round. out.
Knit 1 round. without felling
Knit 4 m 2 together round. out.
Knit 1 round. without felling
Cast off the rest as mitten, but without turns in between.
Tove in the machine - 40 degrees normal wash with Milo, soap or nothing. Are they too little felted after the first round, then run them again.