The Mizu mug by Ninja Prepper is an insulated titanium mug. It features double-wall insulated titanium alloy construction that keeps your drink warm while the outside of the mug remain cool to the touch. The Mizu Insulated Titanium Mug is extreme strength and lightweight. The handles can be collapsed to flush against the cylinder for storage. This 10 oz. mug fits easily in your bag that is perfect for travel and camping.