This neoprene top from Helly Hansen is a great layer to keep you warm when you know you're going to get wet. Unisex sizing. The Helly Hansen BlackLine Neoprene Top was developed together with the Norwegian National Team in sailing. The collection of HH neoprene products delivers great functionality and comfort for water sports in wet conditions. The Blackline Neoprene Top is made to be combined with your favorite bottoms, like the Blackline Salopette. Material: Stretch Neoprene.