The i-Run team says
Technologies
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AHAR+
New density in AHAR. Improves cushioning and durability.
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FlyteFoam Blast Turbo
The FlyteFoam Blast Turbo foam is the lightest and most responsive foam ever created by Asics. Thanks to it, the shoe benefits from excellent compression capacity and offers explosive propulsion.
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FlyteFoam Blast+
The lightweight FF Blast+ cushioning in the midsole creates softer landings and greater energy return.