Efficient Blending Mechanism: Protein shake flasks are unique among shake flasks because they have a built-in battery-powered blender inside. The Super Blend feature will ensure all powder additives are blended well, no need to worry about lumps not dissolving in these drinks. The electric shaker takes only about 15 seconds for perfect mixing, which means you don't need to continuously shake for smoother shaking Powerful Motor and Super Battery: The blender uses the new 2.0 version of the vortex blender and upgraded motor unit for more powerful blending. Our motors are more efficient motors. Thanks to innovative cold-flow technology, lump-free protein shakes are made in seconds. The battery capacity is high, three times that of most products on the market. A fully charged electric shaker lasts 45 days (based on 3 weekly usage patterns) UPGRADED MATERIALS, EASY TO CLEAN: The bottle body is made of food grade material, BPA free. Gives you glass-like transparency and plastic-like lightness, and is shatter- and odor-resistant, so you don't have to worry about any lingering odors. The protein shaker is easy to clean by adding water and detergent to the electric protein shaker and pressing the on/off button. After a few seconds, rinse the vortex shaker for a thorough cleaning Surprise Gifts for Fitness Lovers: Electric shakers are the first choice gadget gifts for fitness lovers such as birthdays, Christmas, Thanksgiving, Father's Day, etc. The electric shaker helps him get the job done easier, faster and more comfortably.