These backpack coolers are great. I use mine regularly and they also make an ideal gift.
I drive tractors during vintage, with long shifts, and many modern compact tractors have REALLY restricted interior space. A seat and lots of levers and gearsticks etc. Hard case coolers just don't fit, even the small ones, whereas the Cooler Backpack always finds a space next to the seat or can be hung on a hook. It always fits in.
Then, it is ideal to take to the beach or a party or a picnic, (perfect height for wine bottles) and the backpack straps make it easy for that longer walk, especially when compared to a hard esky type cooler.
Great quality too.
I recommend the Cooler Backpack to anyone.