Valtcan TitanCore 900 Titanium pot is light and strong, corrosion-resistant and lasts for years. Why the name Thunderbolt name? Because it can take a thunderbolt and still boil your water in your next outdoor trip. Bail handles can be used to hang pot for cooking and easily folds when not in use. Bail handle is removable. Total weight of cup is just 4.2 oz and 5.2 oz with titanium lid. Titanium lid with steam holes and tiny handle. Perfect for travel, camping, offices, or hiking trips. Rounded bottom edges make cleaning easy and improves heating efficiency. Handles fold away for compact storage in mesh bag or cupboard. Titanium leaves no metallic smell or taste. Cup can nest 27 oz Kleen Kanteen water bottle. Please wash with warm soapy water before using.