I've had my 72 Rush for several years now. When I first bought it, I needed to know how it would hold up and carry the weight I would need it to. I loaded up the pack with 3 days worth of: Food, water, clothing shelter and ammo. I then spent the next 14 hours hiking around the timpanogos mtn area. During said hike I gained about 4000 ft in elevation, scaled a few small cliff faces and bushwacked through some thick Oak Brush. I had zero hot spots, no blisters/raw areas from the pack. Needless to say very pleased. Since I've hiked numerous slot canyons and trails in Utah, taken the pack on the Napali Coast trail in Kauai, and all over the redwoods in CA. The pack has never let me down. I've also jumped out of armored vehicles and such with no issues and humped gear in on scouts with no issues either. Honestly I got mine from another group, prior to knowing of MLC. MLC has better prices, lesson learned.