【DOUBLE-WALL INSULATION】: our classic water tumblers are double walled and vacuum insulated, which keeps your drinks hot up to 4 hours or cold up to 9 hours.The high-quality, no-sweat design ensures your desk stays free of condensation. | 【STAINLESS STEEL SKINNY 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】: Thanks to its slim and sleek body, it is easy to carry and store , also it fits in most cupholders. BPA-free slider lid and stainless steel reusable straws are totally eco-friendly and safe for drinking. | 【PERFECT GIFT SET】: Each insulated tumbler comes with 2 x steel straws, 1 x splash-proof lid and 1 x straw cleaning brush. This 20oz tumbler is a stylish and practical 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 with sliding lid 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.