The Billabong Foil 302 is great all round summer wetsuit that will not disappoint you. The lightweight neoprene provides awesome flexibility whilst the furnace lining will keep you toasty warm. The zip is water resistant combined with over lap to create a more water tight closure. There is an Airlite foam core which means the cell structure in the foam is larger so it weighs less & stretches more so additional body heat can be trapped.