Men's Helly Hansen Crew Vest 2.0 Navy - Blue - Waistcoats Our Men's Crew Sailing Vest 2.0 features Helly Tech Protection technology that keeps it windproof, waterproof, and breathable. The vest is also fully seam sealed, which keeps water out. Both the hand pockets and the collar have Brushed Tricot fleece for additional warmth. The vest is mesh lined for extra comfort and breathability.