Insulated Wine Tumbler with Lid, Dishwasher Safe, Stainless Steel Wine Tumblers for Women, Insulated Wine Cups, Outdoor Wine Glasses, Travel Wine Glass (Hydrangea) About this item KEEPS COLD 9+ HOURS, HOT 3+ HOURS. Copper plated, triple insulated wine tumbler is double-walled and vacuum sealed with thick, professional grade 18/8 stainless steel. HOLDS UP TO 2 GLASSES OF WINE, our XL 14oz stainless steel wine glass is the perfect travel companion for trips to the beach, pool, boat, or camping. EASY TO CLEAN, DISHWASHER SAFE stemless wine cup. All Swig Life travel wine glasses and accessories (lids and bases) are top-rack dishwasher safe. NONSLIP, SCRATCH-FREE, NOISE-FREE SILICONE BASE keeps your stainless steel wine tumbler from tipping over or making too much noise when you set them down.