With the Distance 3 Shoe, Salming takes their Rule of Five and applied it a bit more rigidly than they did with the Miles. They've stuck with their 5mm drop and moved to lighter materials, while keeping the overall comfort and durability.
The Rule of Five represents the principles behind Salming footwear. Light, flexible, flat, thin, comfortable. It's the basis of all their platforms. The 5mm drop puts your foot in a natural position, allowing you to take advantage of your foot's spring and flexibility. It's supported by their RunLite midsole. It's lighter and more flexible than the Recoil found in the Miles. It gives you a better feel for the ground. The outer sole mixes real rubber blocks with lightweight blown rubber mid- and fore-foot to maximize durability and minimize weight.
As for the rest of the construction, the Miles ticks off Salming's most famous features. There's the TGS 62/75, which is their way of controlling the shoe fore-aft flex to mimic the foot's natural flexion. There's a flex point 62% of the distance from the heel to the toe. And rather than flexing straight across, the flex point is at a 75-degree angle, which mimics how the ball of your foot is angled across from the outside to the inside. There is a Torsion Efficiency Unit connecting the heel to the forefoot. As the name indicates it limits torsional flex and focuses that energy into forward propulsion. And, as with all Salming shoes, the upper is light and thin and bonded to an exoskeleton that wraps around the foot, keeping it firmly in place and eliminating lateral slop.
The Salming Distance 3 shoe skip counts miles. The result will be longer runs that feel shorter.