The OE Double-Wall Wide Mouth Flask keeps your dose of caffeine piping hot for up to 8 hours and your refreshing drinks cold for at least 20 hours. This 550ml 18/8 stainless-steel flask is BPA and toxin free. The flask is also indestructible which makes it the ideal hydration solution for any adventure. 
 
THE MOUNTAINS ARE CALLING AND I MUST GO!