We were scuba diving in 24C water and expected the thermal properties to be similar to a 5mm wetsuit. This was not the case. Both my wife (in the same product) suffered badly from hypothermia on our first dive. Adding a 3mm shortie on top made it somewhat better, but we were both very uncomfortable. Sitting in the sun between dives did not improve the situation so the second dive was always colder than the first.
After 8 dive trips the stirrup on one leg is coming adrift (only one third of the stitching still intact.