SPECIFICATION Material:Food-grade 304 stainless steel material + food-grade PP + food-grade silicone Size:10.8*2.8inch/27.5*7.2cm Feature:BPA-free,heat resistant,heat preservation,ultra durable,easy to clean,non-fading, non-slip,portable,washable,reusable,odor resistant,never rust and no-metal flavor. FOOD-GRADE MATERIAL Our water bottle is made of high-quality 304 material,BPA-free,high temperature resistant,environmentally friendly,and will not cause harm to the human body.The stainless steel tube has good heat preservation performance. VACUUM INSULATED The outer wall of the inner tank is equipped with a heat insulation layer and a vacuum temperature lock layer to enhance the effect of cold and heat preservation. APPLICABLE OCCASIONS The kettle is designed for you who like outdoor activities the most. It is an ideal urban companion and an ideal companion for your daily drinking. It is also light and durable,which is very suitable for gym,exercise,office and outdoor leisure activities. You can use it in the office,gym or even outdoor activities,such as camping,hiking,kayaking or rock climbing. TIPS 1. Hand wash the tumbler before first use and after each use.A clear straw attaches to the bottom of the lid and can be easily removed for cleaning. 2. After pouring in boiling water,let it cool down without the lid for at least 3 minutes. 3. Please leave some space at top of vessel for lid to avoid overflow. 4. Always keep the tumbler away from children when filled with hot liquids. 100% MONEY BACK GUARANTEE We devote to provide the best customer service and bring the best shopping experience to every our customer. If you are not satisfied with our product,contact us and we can offer a full refund.