Great pack for the big hauls
I used this for 5 days on Mt. Rainier. I went with a size large, but after buying other Gregory packs in a size medium I found them to fit better. I'm 6'3", make sure you measure your torso correctly. My pack was stuffed to the top, super tall when the chimney is full up too. Weighed in around 55 lbs with water and food. After a half day of getting the straps adjusted just right it carried the load quite comfortably, though my legs took a beating the first couple of days getting used to the extra weight. Super durable, but not very water proof, except the bottom rubberized panel. The rain on the last day worked it's way through and got everything wet, glad it happened on the way home. It's a great pack for bigger 45lb loads and up.