These gloves look like tubes, but they are super warm and very very easy to do. They're easy to customize to your needs and they work up fast.
1 Skein of Vanna's Choice Worsted Weight Yarn
About 10 inches or so, but it really depends on the length between your thumb and your wrist and how long you long your wrist warmers to be.
No Gauge, sorry!
You can chain as main as you need to fit your arm length, and
make as many rows and you need to go around your wrist comfortably. Just make sure that the thumb hole goes in the middle. So if you do 40 rows, put the thumb at row 20 etc etc.
Rd 1 - hdc in each st (30)
Rd 2 - hdc in the back loop only of each st (30)
Rd 3- 17 - repeat rd 2.
Rd. 18 - hdc in first 24 sts, ch 3, skip 3 st, hdc in last 3 sts. (30)
(thumb hole)Rd. 19 - hdc in back loop of first 24 sts, hdc in next 3 sts, hdc in last 3 sts back
Rd 20-36 - hdc in back loop of each st (30)
At end of row 36, fasten off and leave a long tail (for sewing together). Then sew the tube together and you're set.
Take a 2nd color and use it to accent the thumb hole, and edges and you're good to go