I bought this for a trip to the keys figuring it would fit into my checked luggage, which it did, just took half the suitcase. I’m not sure where icemule gets their capacities from because this thing is huge! I’ve had 30 beers and ice in this thing on the back patio and it fit fine. As far as ice retention, it does as advertised and the price is right. I’m just really disappointed in the fact that it’s the size of a large duffel bag. Not what I wanted or was expecting. I’m contemplating buying the mini for my trip in May and if the miscalculations are right it should be fine for what I actually thought I was getting.