Hydro Flask 16oz Coffee Flask. TempShield™ double wall vacuum insulation keeps your chai tea latte hot for up to 12 hours and your cold brews icy for up to 24. Use as a large at most coffee shops for less paper cup waste. Durable 18/8 Pro-Grade Stainless Steel construction. BPA-Free and Phthalate-Free. Compatible with the Wide Mouth Flex Cap, Hydro FlipTM Lid, and Wide Mouth Straw Lid. 16 oz capacity. Imported.