The Ramblerå¨ 30 oz. is the tumbler that gets you through the day. Your morning brew stays hot, and your iced coffee will stay cold - so take your time. Kitchen-grade stainless steel with double-wall vacuum insulation will protect your drink at all costs. While the magnet on the included MagSliderã¢ Lid adds an additional barrier of for keeping drinks contained and preventing heat or cold from escaping, please note - this magnet component is not leakproof and will not prevent spills. Available in stainless and DuraCoatã¢ colors that won't peel, fade, or crack.