Thermos Vacuum Insulated Stainless Steel Shaker Bottle with Integrated Stationary Mixer, 24-Ounce, Stainless Steel THERMOS vacuum insulation technology keeps contents cold for up to 16 hours Integrated and removable stationary mixer for optimal blending; Easy to clean Durable stainless steel interior and exterior; Capacity markings integrated into the bottle to assist with measuring ingredients Hygienic flip-up lid with one hand push button operation; Integrated flip-up carrying loop 24-ounce capacity