The Rambler 30 oz. (887 ml) is the drinking cup that will get you through the day. Your morning brew stays hot and your iced coffee stays cold - so take your time. Kitchen-grade stainless steel with double-wall vacuum insulation protects your drink at all costs. Although the magnet on the included MagSlider™ lid provides extra protection to keep drinks in your cup and prevents heat or cold from escaping, keep in mind that this magnet component is not leak-proof and does not prevent spills. Available in stainless steel and DuraCoat™ colors that won't peel, fade or crack.