HOW DOES THE RAMBLER FRENCH PRESS COMPARE TO OTHER FRENCH PRESS PRODUCTS ON THE MARKET? The YETI Rambler™™ French Press leads with durability and thermal performance offering double-wall vacuum insulation. However, when brewing coffee in other French Presses, users immediately have to pour out their contents after plunging to avoid creating bitter coffee. We've engineered our Grounds Control Filter which stops the brewing process after plunging, allowing the consumer to keep their coffee hot in their YETI French Press vessel without over- extracting their coffee.