BE YOUR TRAVEL COMPANION - When you need to go outside on a sunny day, This double-wall insulation and double leak-proof design cup is your best panion, enjoy the outdoors, enjoy the freedom.     STAYS HOT OR COLD - Features double wall insulation to ensure that your drink stays cold or hot, It retains heat up to 8 hours and stays cold for up to 10 hours. Let you always taste the best taste of the drink. Suitable for coffee, coldbrew or tea.     DOUBLE LEAK PROOF - Screw-on bottle stopper and Pop up cup cover ensure the totally sealed of bottle mouth, and don't spill water,so you can throw it in your sports bag or backpack for a hike outdoors, or take it to yoga class, without worrying about leaks.     EXTREMELY DURABLE - Made of Food grade 316 stainless steel,Corrosion resistance, safety, and health,multi-layer wear-resistant non-slip baking varnish ensure that coffee cups easy to hold and long service life.     WARRANTY AND HEALTHY LIFE - Protecting the earth is our duty, our water bottle is not only made of eco-friendly material but brings you a healthy lifestyle. If there is any problem with the product, please feel free to contact us, we will solve it for you as soon as possible, return or guarantee.