This slim travel tumblers are with double walled vacuum insulation technology, keeping your favorite beverages hot for 6+ hours and cold for 12+ hours. Sweat proof, no condensation. The insulation also protects your hands from the temperature of beverage. The temperature of our hands does not affect that of the drinks. Multi-color options and easy to carry. Best choice for parties, wedding, outdoor, camping, free drinking at beach, by the pool or in a boat. Also, full color imprint is available for this item. More information, please send your detailed request for quotation. Made from stainless steel material, measuring 2.75*10.6 inches, this custom multi-color skinny tumbler 20oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: BPA-free, leak-proof, travel-friendly.