This is a pattern for a pair of simple legwarmers. It is knitted in the round and has a rib top and bottom. It's designed to fit most legs, but if you wanted a much smaller or much larger size would be easy to adapt, either by changing needle size or changing cast on stitches in groups of 3.
I knitted the sample with Manos Alegria, which gives it the fantastic jazzy eighties colours. If you wanted something less vibrant any soft and slinky 4ply would work.