I love this for climbing! It works great, but dont get the srong idea, by no means is it water proof. When the rain drops get much bigger then a dew, it goes straight through. But when heading up to your favorite climbing spot and its a little chilly its handy for the trip and the climb. Nice piece, I have the entire line of OR Ferrosi and its a great piece to have. It does fit a little snug, but im pretty thick for a climber.