Men's sea vest from Xifias Sub. It has a thickness of 3mm and is suitable for swimming or simple underwater observation (snorkeling) in warm waters, such as those of the Mediterranean during the summer months, or tropical areas during the winter period. It features a shaved inner surface, which offers effective insulation and greater elasticity, while requiring the use of soapy water to wear. The suit without a zipper offers greater freedom of movement, especially in the shoulders and back, provides a tight fit, and additionally improves water resistance.