we freedive the lake of zurich in switzerland all year round. in winter time the water has around 5 degrees c. me personally I go for constant weight only if the surface temperature is above 10 degrees. at depht it is cold anyway, but for the preparation I cannot relax and breath up properly if it is too cold. And then packing doesn't seem to work anymore, when the lips are too cold. Of course a good suit makes all the difference! So usually it is hands and feet causing the real problems with coldness. Secret hint: Elios does not only sell super warm and flexible suits but also great open cell socks
yours pat
