Just moving this pattern over from The Point's blog, so the free pattern goodness will live on . . .
Fingerless ribbed arm warmers
By Erin Ruth
Materials: 2 balls of Sublime Organic Merino (113 yds/ball)
Size 6 (or size needed to obtain gauge!) double-pointed needles
Gauge: 5.5 sts/in in stockinette (6 sts/in in 1×2 rib)
Cast on 42 sts.
Join in the round.
(K1, p2) around for every round until you have a 12” tube.
Creating Thumb Hole:
Using scrap yarn instead of working yarn, knit the first 8 sts of round.
Turn and work back across these 8 sts, still using scrap yarn.
Pick up the working yarn again and knit in (K1, p2) rib over the 8 scrap yarn and continue on around the round.
Work in pattern for 1.5” more.
Bind off loosely in pattern.
Carefully pull out the scrap yarn, one stitch at a time. As you remove the scrap yarn place each stitch on your needle. You should end up with 8 sts on the bottom and 8 sts across the top for 16 sts total. Divide these sts on 3 needles, join yarn, and begin working in the round, maintaining the established rib pattern. When you get to the corner between the top and bottom stitch, pick up and knit one stitch in each corner for a total of 18 sts. Knit these 18 sts in (k1, p2) rib for 1”. Bind off loosely in pattern.
Finishing: Use the tail where you joined yarn at the thumb to tighten up the corners – there will be small gaps where the stitches turn. Weave in ends.