Come and see our amazing products. This bamboo stainless steel tumbler features double-wall, vacuum insulation to keep drinks at optimal temperatures - twice as long as standard, single wall tumblers. The lid screws on and features a flip top. The bamboo material can be engraved with your company's logo or brand. These mugs are great for coffee, tea, alcohol, sports drinks, and more to take your drink on the go. Not recommended for dishwashers, hand wash only. Do not place in microwave. Pls confirm with us about the packing info, stock color and exact production time before placing your order.