This flask has vacuum inside and steel on out. It specifically made to keep your milk fresh for over 24 hours, it is durable and easy to clean. 
This Metal BodyStainless Steel Vacuum Flask  is 100% stainless steel on the outside.
 Our community is a diverse one, because healthy hydration is for the many, not the few. So whether you’re a master of the outdoors, a casual creative, or an office superstar, there is a durable and uniquely stylish flask for you. 
Flask is eco-friendly, hypoallergenic, customization, and double-insulated - allowing you to keep cool or stay steamy as long as you need.

• Weight (kg): 0.5
• Color: Silver