BUY STAINLESS STEEL TEA / COFFEE / MILK GLASS AND TUMBLERS AT BEST PRICE IN BANGALORE INDIA. A steel coffee tumbler is a type of drinkware made of stainless steel that is designed to hold hot or cold beverages, primarily coffee. Steel coffee tumblers are often used as an alternative to traditional ceramic or glass mugs because they are more durable, resistant to breakage, and can be reused multiple times. They are also usually insulated to keep drinks at the desired temperature for longer periods of time. Steel Coffee Tumbler Stainless Steel Tumbler Insulated Tumbler Travel Mug Coffee Mug Beverage Tumbler Metal Tumbler Reusable Tumbler Durable Tumbler Rust-Resistant Tumbler Hygienic Tumbler Eco-Friendly Tumbler Outdoor Drinkware Picnic Drinkware Camping Drinkware Dishwasher Safe Tumbler Stackable Tumbler Lightweight Tumbler Stainless Steel Drinkware Coffee Tumbler with Lid.