Very natural. No skid sole was nice in the pool. Feet stayed warmer and protected in open water. Swimming felt natural, was not weighed down at all - if anything neutral due to buoyancy factor. I have had them now for year, no signs of break down. I was with wetsuit wash to clean off chlorine every time, just use a little it goes a very long way.

The fit was great easy to remove when wet, a plus when doing triathalons. Comfortable to walk/run and swim in.