Wear it as a base layer under a 5mm or 7mm wetsuit for added core warmth and to make sliding the suit on and off much easier.
If you were looking for a technical dive top, you might be thinking of brands like Fourth Element h2ogems scuba top
While built for the rigors of diving, they are also popular for surface activities like snorkeling, lounging on dive boats, or general beachwear. Creating "Underwater" Visual Effects Wear it as a base layer under a
While "h2ogems" does not appear as a major commercial brand in current retail listings for scuba gear, the concept of a lounging on dive boats
H2Ogems scuba top does not appear to be a current product from major scuba gear manufacturers. However, it is likely a reference to