Semi-dry suit
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Semi-dry suits are worn to keep the user warm while immersed in water temperatures generally between 10 and 20 °C (50 to 70 °F). They are a thick wetsuit with seals at the wrist, neck and ankles, similar to a dry suit. The seals only reduce, but do not eliminate, water seepage, so the interior of the suit still gets wet. In colder water, dry suits provide better comfort and protection, with less restriction of movement than a semi-dry suit of similar warmth.
See also: Diving suit#Semi-dry suits