Just got back from a couple days in West Yellowstone on these. I got the 35 inch model hoping for floatation while using a heavy pack. All told I probably had 260 lbs with myself and a pack. I don't have a frame of reference since I don't snow shoe a lot (I'm a back country skier who uses skins) but I would say the floatation in powder snow (3 feet with probably a foot of real soft) is OK. I suspect that the narrow profile has something to do with it. That said, I love the binding system. Easy on and off. I used the elevator on a steep uphill and that worked well. The crampon dug into ice very well. Overall the build quality is great and should last a long time.