I played golf for 4 hours on a windy day in the rain and the suit is both waterproof and windproof. I ordered a large and the jacket is too tight, the pants fit well. I live in the UK and the costume was shipped from the US in 4 days which I find amazing. The suit has many adjustments to fit snugly around the wrists and ankles. I decided to keep the suit and just wear the jacket over the t-shirt.