【DOUBLE-WALL INSULATION】: Our classic water tumblers are double walled and vacuum insulated, which keeps your drinks hot up to 3 hours or cold up to 9 hours. The high-quality, no-sweat design ensures your desk stays free of condensation. | 【STAINLESS STEEL WINE TUMBLER】: Made of 18/8 food grade stainless steel with powder coating, no more worries about peeling or rusting. Highly durable construction and splash-proof design make the travel tumbler great for indoor and outdoor use, it's an ideal coffee tumbler for keeping. | 【PORTABLE&ECO-FRIENDLY】: Small and light design make it easy to carry around. BPA-free lid and stainless steel reusable straw are totally eco-friendly and safe for drinking. Dishwasher safe. | 【PERFECT GIFT SET】: Each insulated tumbler comes with a BPA-free lid and a reusable steel straw. This stemless wine tumbler is a stylish and ideal gift for your friends, families, or colleagues on birthday, Christmas, Valentine's Day, Halloween, Mother's Day or Father's Day. | 【PRACTICAL TUMBLER】: The coffee tumbler can be used as wine cups, champagne cups, water cup or sports fan travel mugs, suitable for parties, picnics, self-driving travelling, boats, beach, pool, camping and hiking, etc.