Learn to Knit: Jeny's Stretchy Cast Off / Bind Off Tutorial
If you need a little extra stretch at the end of your work this is the perfect cast off (or bind off for you!)
SET-UP

1. Work a reverse yarnover.

2. Knit 1 stitch.

3. Lift yarnover over stitch.
BIND-OFF STEPS

4. Work a reverse yarnover.

5. Knit 1 stitch.

6. Lift yarnover and first stitch together over second stitch.
Repeat steps 4-6 until all stitches have been worked.
Read more about How To Bind Off / Cast Off.