Spearfishing wetsuits nomally is two pieces design, jacket top and high waist pants or long john. Spearfishing wetsuits always with various camouflage colors outside. The purpose is to hide themselves in the waters and protect themselves from being detected by fish and attacked by fish. The colors of these camouflages were almost the same as the sea environment. About the thickness for spearfishing wetsuits, you can choose 1.5mm, 3mm, 5mm, 7mm, and 9mm.