what is the purpose of a wet suit
Diving suit Wetsuits are relatively inexpensive, simple, expanded neoprene suits that are typically used where the water temperature is between 10 and 25 °C (50 and 77 °F). The foamed neoprene of the suit thermally insulates the wearer.[7][8] Although water can enter the suit, a close fitting suit prevents excessive heat loss because little of the water warmed inside the suit escapes from the suit to be replaced by cold water, a process referred to as "flushing".
Squib (explosive) While most modern squibs used by professionals are insulated from moisture, older uninsulated squibs needed to be kept dry in order to ignite, thus a "damp squib" was literally one that failed to perform because it got wet. Often misheard as "damp squid",[9] the phrase "damp squib" has since come into general use to mean anything that fails to meet expectations.[10] The word "squib" has come to take on a similar meaning even when used alone, as a diminutive comparison to a full explosive.[11]