What is a qualified shaker bottle? BoldSaasify Demo shaker bottle uses antibacterial technology and has double-layer vacuum insulation, so you won't have to worry about your protein powder spoiling if you don't drink it right away. Even in the sweltering summer heat, you can be sure to get the freshest sip. Please note: The interior of the bottles may feature golden titanium coating, which provides antibacterial properties. BPA and Lead Free 18/8 food-grade stainless steel Dishwasher safe Stay-put silicone bottom Fits in most cup holders Size chart PRODUCTS CAPACITY WEIGHT SPECS. SHAKER 26oz 1.38 Pounds 10.63 x 4.52 x 4.52 inches