The Vertex is smaller than the Heli Pro, but it's a good day pack. I use it on days at Whistler where I'm yoyo-ing in and out of bounds, with a lot of lifts and a little hiking. It's good for an extra pair of gloves, a fleece, a shovel, some food and water, and the other BC essentials. It also features that Dakine cross carry system for your skis, so your shit is easy to hike with.