· The Rambler 10 oz Stackable Mug is made from durable stainless steel with double-wall vacuum insulation to protect your hot or cold beverage at all costs · These Ramblers come standard with the YETI MagSlider Lid, the only drink lid that uses the power of magnets to keep your favorite drink on lock · While the MagSlider Lid adds a barrier of protection for keeping drinks contained and preventing heat or cold from escaping, Please Note – The MagSlider Lid is not leakproof and will not prevent spills · YETI Ramblers are BPA-free, dishwasher safe, and have a No Sweat Design to make sure your hands stay dry. The tough Duracoat coating on the colored tumblers won’t crack, peel or fade · The YETI 10 oz. Rambler Mug stands 4 inches high and has a lip diameter of 3.5 inches, and with the handle its almost 5 inches’ wide