“I fill this with boiling water and after 24 hours, water is still close to boiling/too hot to touch. Very sturdy with a good handle. Would recommend for anyone wanting a large flask. Not cheap, but it does its job and will last.”
“Purchased a 1.7 flask. Great at keeping drinks cold but absolutely impossible to drink from due to the large opening and screw top. Unfortunately won't be using it as originally intended everyday because of the lid”