My wife and I have used the original spring style yaktrax for years. Living in Jackson, WY and walking 3-4 miles a day in the snow in winter we are experts on traction devices. The originals have a couple problems. First is the springs break - or the rubber under foot breaks. Second is that walking in snow is great, but on hard surfaces like ice or paved roads or sidewalks the springs are too tall and unstable. I would often feel the need to remove the yaks on hard surfaces. These new chain yaks have seemed to solve these problems. Really like them and expect they will last much longer before we wear them out. The only suggestion would be to add a strap like the pro model on the originals for better retention when climbing or descending in rougher conditions - like on Snow King Mountain behind our house.