My daughter is a runner, and I walk/run- both year round in 40-65F temperature  zone. Anything fleece or knitted gets way too hot! When I came across these, I figured they would be the right thing. I also didn't want to be a huge amount, in case they weren't what I was looking for.
They give just the right amount of coverage. The fabric is breathable, so it doesnt get uncomfortable.
Also, its nice to have the shorter version- especially for my early morning walk/ run. I warm up fast, and less bulk is good.
This was a decent buy for the price.