Bests & Worsts Reviews from Amazon

I am a delivery driver and in a vehicle all day with no A/C in one of the hottest states in the U.S. I drink a gallon of water each day and was tired of a completely frozen jug turning to hot water before noon. The first day I used this bottle I put too much ice and I ran out of water since it stays so cold the ice didn't melt. I have it down to a science now to where I have cold water all day. I bet this would last for at least 48 hours or longer depending on the conditions and the amount of ice put into it. Everywhere I go people want to know where I got the bottle. GREAT PRODUCT!