Fourth Element Women's RF 3mm VestThe RF vest is designed to be worn with the RF1 freedive suit for additional warmth. The vest pulls over the top of the suit without impinging mobility, adding a 3mm hood and additional 3mm of thermal protection to the body core for cooler waters or longer dives. The Glideskin outer panel help you move easily through the water. This vest features ear holes for ease of equalizing quickly and effectively. The holes let in a small amount of air to stop