TAK 19oz Thermos Flask Stainless Steel Double Walled Non-Toxic BPA Free Water Bottle -VACUUM PRODUCTION:Double wall vacuum insulation.Capacity up to 550ml.Protects temperature for up to 24 hours cold and 6 hours hot. -LEAK-PROOF:Silica Gel with Stainless Steel to stop leaking -KEEP FRESH:18/8 pro-grade stainless steel will not retain or transfer flavors. Made from stainless steel, it retain minimal odor or taste from contents. No plastic odor, no strange taste. -COLLAPSIBLE CUP:The pocket size collapsible cup fits in the palm of your hand so you always have a cup when you are out and about -WARRANTY:Includes 90 days limited warranty.