Wetsuits are specialized garments designed to provide thermal insulation to individuals engaging in water activities, such as diving, snorkeling, surfing, and freediving. The primary purpose of a wetsuit is to keep the wearer warm by trapping a thin layer of water between the suit and the body. This water layer is then warmed by the body heat, forming an insulating barrier against the colder surrounding water.

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Spearfishing wetsuits are specialized for underwater hunters . They feature camouflage designs for stealth, often use open-cell neoprene for flexibility and insulation, and have reinforced areas on knees and elbows.