I was excited about this cooler after reading so many glowing reviews.  Cooler appears to be sturdy and I liked the latches a lot.  I however have been left unimpressed with it's performance.  This cooler was unable to hold two 8lb bags of ice for more than 36 hours.  I actually ran a side-by-side comparison to a 16 year old Coleman cooler.  Both coolers were loaded identically and kept out of the sun in a garage with temperatures around 75-80.  I checked the ice every 12 hours so as to not be opening the coolers very often.  The rate of ice melt was exactly the same.  Ice was gone in each cooler in 36 hours.  I did not pre-cool either cooler and the only thing in the coolers were the ice.  My Lifetime cooler was even the model with the upgraded seal on the lid.  7-day ice retention?  Maybe a bunch of block ice in 60 degree weather.