Some water runs through it, but not much. Great fit, keeps you warm, and feels very streamline. Really like it!!
I swim for an hour each day and, as the water cools, I have used this spring suit. It fits perfectly - true to size - and allows a little water to"creep" in, but my body warms the water and it is working very well.There is no chafing and it is easy to get on and off. I'm very happy with this suit.
It is great because if you want to swim during the night or late evening, it keep warm within the pool. If you are extremely sensitive to temperature changes, it is a must in your swimming wears.