Come and see our amazing products. This is 350ml/12 Oz. Made of double-layer, 304 stainless steel inside, 201 stainless steel outside. Keep warm/cold for 8-10 hours. Leakproof, BPA free. The mug is great for indoor and outdoor use. It is perfect to hold your tea, coffee, milk, hot chocolate and much more. The material can hold hot and cold beverages. your metal water bottle will always ensure a pure, clean taste that won't retain or transfer flavors. QTY pass 10000pcs will ship by sea price. Available in many colors and custom logo is welcome. Pls confirm with us about the packing info, stock color and exact production time before placing your order.