This is my go-to pant for any activity on snow. They excel ice climbing, alpine climbing, ski touring, downhill skiing, backpacking in wet weather, paddling, and shoveling cars out of the driveway. The material is extremely waterproof, and continues to be so after two years of heavy use. The waistbelt is a fantastic option to snug these pants up as you layer/delayer. The reinforced inside cuff has held up to much abuse from crampons and ski boots. The articulated knees have allowed me a full range of motion touring and also climbing. And the full side zips are indispensable for activities like ski touring where you need to dump heat on the way up, and then quickly zip up for the descent. Bottom line: they are reinforced and strong where they need to be, and light where they don't. They allow you to move naturally. They are very waterproof. They are awesome, and will be accompanying me on adventures for several more years.