After reading several reviews on cool boxes (both powered and non-powered ones) I came to the conclusion this was the best value for money option. I wasn't disappointed.
We bought this cool box for our recent trip to France where we wanted to keep our drinks/food cool by the pool and also cheese and meats cool for our 14 hour journey - it did that and more.
Capacious and study we easily kept a couple of bottles of wine, a 2ltr bottle of water, some smaller bottles of water and our lunch in there in 27degree temperatures (albeit in the shade) and everything was lovely and chilled.
The locking handle is the only slight issue, although well designed we found as long as you store it face on the lid will not come off, if knocked over chances are the lid will fly off!.
I didn't give this five stars because I can see the lid design could be a bit of a pain to some (especially if the box falls over).
One more point - we used two small ice packs and one of those A4 sized liquid packs at the bottom (takes less room).