O’Neill Hammer Wetsuit The O’Neill Hammer wetsuit is a great price point wetsuit which stacks some awesome wetsuit technology. The O’Neill hammer has loads of stretch especially in the paddle zones where it really counts. If you are on a tight budget the hammer will see that you are comfortable, warm and able to rip the waves. The O’Neill Hammer come in the O’Neill Hammer Winter Wetsuit and the O’Neill Hammer Summer Wetsuit.