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I will continue to follow Salomon as their new Running Avenue road line (review soon, preview here) with effective VIBE vibration reduction technology hits the market.

I am always curious to see what innovations rapidly growing Altra will come up with next I look forward to adidas getting back in the energy return game they created with Boost or with something else, enough of the soft and mushy. I am eager to run the latest from Nike as they expand Zoom X to more models. LaSportiva will join Brooks in the PU midsole game with a premium trail runner the Unika while Salomon will use PU as a forefoot insert in its upcoming top of the line S/Lab Ultra both with a focus on long haul durable consistent cushion on trail. On the gear front I am looking forward to innovative midsole outsole constructions which balance plenty of responsive dynamic cushion with light weights and flexibility! These include Brooks DNA AMP in more performance oriented shoes such as the upcoming Ricochet ( preview here), UA HOVR ( preview here) and Reebok Float Foam ( preview here) that we are already testing. I am reconsidering my marathon "retirement" given how effective the Vapor Fly have been for me in terms of in race leg soreness, my usual issue in later marathon miles. I hope for good health and many fun miles of training and racing. Sadly in 2017 most new adidas, with one exception covered below lean more more "pure" Boost which for my taste is overly soft and uncontrolled. adidas started this trend several years ago with its Boost midsoles, which for me were most effective when well encased and controlled by EVA layers and plastic stabilizing elements. Underfoot brands are now looking to offer more dynamic rides beginning to lead to an "arms race" as to how much "energy return", response, and leg friendlier cushion can be claimed through the use of new midsole materials and construction methods. We expect costs to drop and more accessible models to appear.

The down side of Pebax and the carbon plate which stabilizes and directs forward energy is cost of construction and materials, $250 for the Vapor Fly. The Pebax midsole has a silky, springy responsive feel with great shock attenuation. The Pebax foam is far lighter than EVA and carbon weighs almost nothing. Most notable of these new approaches is Nike's Zoom X Pebax foam and carbon plate in the Vapor Fly 4%. Midsoles really started to move away from conventional EVA and EVA blends in 2017 seeking greater energy return while providing more shock reducing cushion.