My money is on a modified RickRack. Rick Rack ribbing? But let's be clear on one thing: not garter stitch.
Look at the puffy hands! Heehee, I love the way they make these actors actually become dwarves!
My only regret is Thorin wasn't wearing knitting so we could stare at Richard Armitage. You know he is awesome when 3 generations of women in one family sigh when he comes on screen.
Back to Ori. He really has the most textural knitting in his costume. Some day I aspire to knit for Anne Maskrey. Really just beautiful!
How to knit Ori's Mitts
Knit Picks City Tweed held double
These are a bit harder than the first 2 sets of Dwarven Mitts.
Cast on 40[46,52] stitches.
Row 1 (right side): P1, *skip first stitch, knit in back loop of second stitch (leaving stitch on left needle), knit in front of first stitch (remove both stitches off of left needle), p1, repeat from * to end of row.
Row 2 (wrong side): K1, *purl into second stitch (leave stitch on left needle), purl into first stitch (remove both stitches off of left needle), k1, repeat from * to end of row.
Repeat Rows 1 and 2 until 9", ending having knit Row 2.
Bind off with right side row facing in [p1, k2] pattern. Seam leaving a hole for your thumb.