This sackpack is so pretty and good quality, the same as the picture, the cooler has room enough, a bit rough but it could be because is new,  the rope is bulk. I couldn't imagine it would be kind of big , I think the seller should say the measure instead only say one size. I would recommend it anyway if you need this size, the measure are: 14" x 18.5" x 14.5" (37cm x 47cm x 35cm).