I’ve never been able to hold two strands of yarn when doing stranded knitting, and keep switching between the strands. This is an absolute killer for the wrists, in addition to the repetitive motions of the knitting. So I finally ordered a knitting thimble and it is FANTASTIC. The floats are so neat, the tension perfect, and I also knit faster.
Here is a little video showing how to knit with the thimble.