A 3.5mm thick Heiwa neoprene sleeveless vest, with black extra strong elastic nylon outer and blue slick thermal inside lining for ease of putting on and off.
Vastly improves warmth when worn under a jacket, whilst not impeding flexibility, by adding unnecessary thickness to your arms.
This is an inexpensive and flexible option to double the warmth of your existing jacket, when cold conditions prevail. Eliminates the need for owning a second thicker jacket for colder conditions. Can also be used as a thermal protective layer to the chest for tropical warm water conditions. A great way to make a single wetsuit more versatile.
Black nylon exterior to provide slip for overcoating with your jacket. Also great for canoeing, kayaking, sailboarding and other active water sorts where some warmth is required while retaining unrestricted movement. Well cut arm and neck openings for comfort in movement areas.