This is a super thin lightweight packable jacket,but don't let the thinness fool you. It is sturdy and durable. The sizing is trim fit maybe go one size up?It has been completely water proof so far, not just resistant. I have worn it in some heavy rain, with winds, for hours with no leakage. Except for one spot and that is the cloth stitched Columbia logo on the chest (it wicks water through).The newer model has a printed logo, so Columbia fixed the problem. I sprayed Ansco Silicone Waterproofer on the logo and no more leak. The weird thing is there is no seamseal or seamtape anywhere , and there are a lot of seams. Small complaints would be that is not good for real warm weather, there is no liner or venting and my arms get a little sticky with short sleeves underneath. Throw a medium weight fleece underneath and it becomes nice and warm in colder weather. This has been my go to jacket this spring and I am very satisfied with it.