My go to backpack
This is a fantastic bag. Tough material (have rubbed up against trees a bunch), awesome features (the helmet carry on the front is great), and the water has never frozen on me. Also, the bag can be massive or you can sinch it down really tight for a low profile on the lift. I've never had any problems with it being too bulky while riding up but the straps do get really long when it is tightened down. I recommend rubberbands to keep them in close.