I was caught in the rain both in South Carolina and the Pacific Northwest and stayed completely dry.  Im 59 and 150 pounds and the large fits nicely.  Its roomy enough to wear a fleece under if its cold.  The fabric is like a heavy windbreaker.  The up/down zipper is sturdy and very handy for getting into pockets under the jacket.  The hood is just right and designed to cover the brim of a baseball cap.  The red is very bright but not fluorescent.  I only wish the belt was lower, as it sits above my waist, and its not removable, so I tied it behind my back.  Unlined, so inside doesnt look very stylish, but it is very light.