Wawavita Stainless Steel Water Bottle 600ml/20-ounce Thermos Camping Kettle, Stainless Steel Travel Mug, Outdoor Vacuum Cup, Brown 18/8 high quality food grade 304 stainless steel for inner and outer surface. Vacuum flask keeps beverages hot or cold up to 24 hours (see product details). 600ML/20-Ounce capacity thermos water bottle. With Rope design, easy carrying and prevent lid loss. Double wall vacuum insulation, Non-leaking and toxin-free.