Asics Gel Fortitude 4

Essentially the same as predecessor with a new upper design, the 2010's Asics Gel Fortitude 4, a versatile trainer built-ed for large frames runners and for the needs of special groups of low to flat footers who does not over-pronate. The shoe also addresses the needs of the severe over-pronator as well, as it is designed to accept orthotics without risk of over-correction. (Updated Model : Asics Gel Fortitude 5)

MSRP : US$100
Weight : 12.4 oz / 350 gm
Predecessor : Gel Fortitude 3
Product Cycle : RY.2010.→DY.2011.Jun.
Features : Gender Specific, Gel®, Trusstic® System, SpEVA™, PHF™, SpEVA 55 Last, ComforDry™ Sockliner, AHAR Outsole®

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A daily high mileage "Neutral" shoe with moderate features for runner with "Low Arch" who don't need addiontal support.

History : Gel Fortitude Series : Fortitude 4('10), Fortitude 3('09), Fortitude 3('08), Fortitude 2('07), Fortitude('06)

AHAR+ : A thinner and lighter version of Asics High Abrasion Resistance rubber. It is placed on the impact area of the outsole to reduce excessive wear.

Gel® : Provides maximum rearfoot and forefoot shock attenuation.

PHF™ : Personal Heel Fit System : Moulds and customises itself to the individual heel shape of the wearer.

Trusstic® System : Moulded component under the midfoot area. Provides over-pronation control in combination with extremely contoured midsoles. Reduces the weight of the shoe.

SpEVA™ : Is a full length midsole material and is Asics' mid-level midsole. Although SpEVA is not as durable and lightweight as Solyte, it has increased energy return compared to that of compression molded EVA.

SpEVA™ 55 Last : On top of the inner rear portion of the shoe, it has a medium density to deliver a moderately soft feel under the foot.