This delicious bag of Boulder Parmesean & Garlic Kettle chips requires opening on the side. I don't know about you, but I believe that chips must be opened by separating the bag at the top, not tearing lengthways down the side, allowing all the chips to spill out. Because of this poor bag engineering, I was forced to eat this entire bag in 24 hours with tzatziki sauce. Harrumph!