ship from Japan Capacity: MMZ-K035 0.35L, MMZ-K050 0.5L, MMZ-K060 0.6L Insulation efficacy (6 hours): MMZ-K035 above 69 degrees, MMZ-K050 above 74 degrees, MMZ-K060 above 76 degrees Cooling effect (6 hours): MMZ-K035 below 8 degrees, MMZ-K050 below 7 degrees, MMZ-K060 below 7 degrees We have achieved weight reduction through our unique spinning process, and the 0.35L size is about 170g, the 0.5L size is about 190g, and the 0.6L size is about 230g. The ‘bottle’ is ideal for carrying around when you go out. SIAA (Antibacterial Product Technology Council) certified antibacterial processing