1.Stainless steel insulated protein shaker keeps cold drinks up to 30+ hours cold and keeps hot drinks up to 8 hours warm. Temperature of cold beverages raise only 1.8 degree Fahrenheit per hour in a room temperature of 71 degrees Fahrenheit. 2. It is proven that a twist-on cap is at least two times more secure than a flip-top cap against spilling and leaking and the lid wont burst open when dropped. No more accidental leaking/spilling leaving a mess and ruining your day. Our exclusive patented twist-on cap can be used for hot beverages because the inside air pressure can be released/ gas off through the sides of the twist-on cap while opening it slowly whereas flip-top cant withhold shaking hot drinks. 3. Our premium stainless steel does not absorb odor and is easy to clean without leaving any stains and it wont rust. The last thing you want to have is smelly stinking shaker. 4. Shaker bottle and lid can be washed in a dishwasher. Its dishwasher safe making clean-up so much easier and less hassle. Throw it in overnight and its ready the next morning Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!