For those of us who are required to carry a bear cannister, they weigh 2+ pounds. My "big three" items weigh from 2-3 pounds. The bear can is NOT an insignificant item! I propose that the bear can become the "Big Foruth". My "big four" therefore are 1) pack, 2) sleeping bag, 3) tent and 4) bear can. As much as we spend $$ to reduce our pack weight or sleeping bag weight, the bear can deserves as much consideration. For those who do not have to carry a bear can, you really have no idea of how frustrating this is.