I know this a strange question, but my DH figured someone on DIS would know. We are trying to determine what size the ice is at POP. Is it the square chip kind or is more of the round ice with a hollow center? DH's back is really flaring up and we leave next week. We are trying to determine what the best way to ice his back will be. He is hoping it's the square chip shaped ice as those will be more comfortable to make packs out of with ziplocks. So does anyone know? Thanks!