What does the indication 4/4 mm mean, with reference to the thickness of a wetsuit?

Question

What does the indication 4/4 mm mean, with reference to the thickness of a wetsuit?

Answer 1

thats a thick wetsuit

Answer 2

The first number typically indicates the thickness of the torso and the second the arms/legs thickness.  A 4/4 would indicate that both the body and arms/legs are 4mm.  A 3/2 would indicate a 3mm body and 2mm arms and legs.