Great backpack, better back protector
"Used thiis backpack for the past few months during the ski season. A-frame ski carrier system works like a charm. But the best feature is the ability to combine with a mammut back protector pad. I do some free style skiing on top of back country and I wiped out 2x very hard. Thankfully the backpack and padding saved my back from any real injury. I was able to continue skiing the rest of the weekend. 10/10 would reccomend for safety. NOTE: the older models came with a helmet holder strap, this model does not."