Improving on the proven performance of tech bindings takes knowledge of what works and what doesn't. And while G3's Ion 10 Alpine Touring Binding might not be revolutionary in design, it does improve on the proven designs of tech bindings by refining some of the finer aspects of their design, resulting in a better skiing, more efficient, and hassle free backcountry binding.With lower release values than the Ion 12, this 4 10 version of the Ion is ideal for the lighter, less aggressive skier who doesn't need the extra retention. The Ion 10 maintains the same freeride design of the 12 with a wide mount that's 33% wider than traditional tech bindings, giving the binding the ability to more effectively transfer power to the edges of wide, freeride skis. The heel piece delivers better downhill performance with forward pressure heel elasticity this gives the heel the ability to absorb energy and maintain consistent forward pressure, resulting in more consistent release values and improved downhill performance. Since touring bindings will spend the majority of their time going up, G3 refined the climbing features on the Ion, so you'll spend less time trying to figure out which way to turn the heel piece, scraping ice from the toe piece, and trying to get your toe into the binding.In addition to the wider design and increased elasticity in the toe piece, it is also equipped with a step in guidance feature that puts your boot exactly where it needs to be for a quick and secure clamp. The heel piece can be turned in any direction, so you won't have to worry about turning it the wrong way, while the quickflick heel risers have an intuitive design, allowing them to be quickly grabbed by either a pole or hand. The toe piece has a snow clearing channel to keep the area beneath the toe springs free of ice and debris to ensure a solid and reliable attachment to the boot. Another nice feature on the Ion is the brake's ability to remain engaged until the boot actually disengages...