More chill, less refills! Our triple insulation technology allows our top-selling stemless wine cups to keep drinks cold up to 9 hours and hot up to 3 hours. Their unbreakable construction makes them perfect for enjoying chilled wine or cocktails by the pool, hot tea in the morning or even ice cream sundaes before bed (Swig calories don't count!). This Swig includes a slide-closure lid to reduce messes while on the move and to maximize temperature retention. The straw-friendly opening can be covered with the slider to minimize spills when not in use. The slider is removable for easy cleaning and will snap back in place.