GH Sports Women's Aqua Thermal Vest The Women's Aqua Thermal Vest is designed to kill-the-chill during water activities without weighing you down in the water. Its sleeveless design allows the use of a rash guard or swim suit as a base layer. For a correct fit, the aqua vest is designed to fit nice and snug. While zipping it closed, the fabric should be lightly stretched and pulled snug for an all-around taut fit. When fit correctly, it keeps water from actively flowing into vest which keeps you warmer. A double-layered mesh fabric with a fleece inner lining make up the torso of this comfortable aqua vest, offering wind-resistance, sun protection and water-resistance qualities. 100% polyester vest, keeps you warm and lasts against the chlorine. Lightweight enough so that it doesnt weigh you down in the water or restrict movements, but technical enough to insulate in cool to cold water or weather. Designed and manufactured in San Luis Obispo, CA where all GH Sportswear is made.