40 oz Insulated Reusable Tumbler with Handle and Straw Lid Stainless 40oz Insulated Tumbler with Lid & Straw Perfect for Travel Igloo 40 oz Stainless Steel Travel Tumbler Stainless Steel Tumblers & Insulated Tumbler Cups Igloo 40oz Insulated Tumbler with Lid & Straw Perfect for Travel. The 40 oz. Travel Mug from Igloo provides long lasting hydration throughout the day and features a no leak straw with gasket to prevent spills. Other features include a built in coaster, a 2 piece straw that comes apart for easy cleaning and storing, a low profile and will fit in most cupholders. Low profile, Flip n sip threaded leakproof tumbler lid Dual threaded Tritan lid for left and right handed drinking No leak straw has a gasket to prevent spills 2 piece straw comes apart for easy cleaning and storing 304 Food grade stainless steel Double wall vacuum insulated construction Copper lining improves temperature control Built in coaster protects surfaces No Look Thumb Grabber for finding the drinking spout while driving Extra large opening for easy cleaning Fits most cup holders