Have I bought this bottle around my coffee for a long time in the University hot to enjoy. The bottle is well made and has the promised insulation function. Unfortunately, I have to deduct 3 stars because the bottle has a weak point that it has become unusable and is pleased with so far every time out after the insulating ring on the closure and to reinstate him is an ordeal ... As it would have been all he is also torn .... For this price in my opinion unacceptable