Asics Gel Kinsei 4

Pure Running Science is what the Asics Gel Kinsei 4 is all about. Improving and reducing the weight of existing technologies is the main focus in the 4th Gel Kinsei. Featuring a new external clutch heel collar for a much reduction in heel slippage, a roomy toe-box, lower midsole and a much decoupled 5 pod forefoot to provide better flexibility and more cushioning. With such re-engineering, resulting in not just weight reduction but also helped improve the shoe overall performance. The Gel Kinsei 4 continues to take strides toward engineering an adaptive shoe for all types of runners. ( Updated Model : Asics Gel Kinsei 5 )

MSRP : US$185
Weight : 11.9 oz / 337 gm
Predecessor : Gel Kinsei 3
Product Cycle : RY.2011.→DY.2013 Jul.
Features : Style : Gender Specific : Upper : Cuprothermo Mesh, Biomorphic Fit®, PHF®, Asymmetrical Lacing, Discrete Eyelets, ComforDry Sockliner, Solyte® 45 Last : Midsole : Solyte® Midsole, Forefoot n Rearfoot Gel, Space Trusstic System : Outsole : AHAR+, DuraSponge, Guidance Line™ : Misc. : I.G.S.®

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Recommended for runners with normal to high arches looking for a highly-cushioned shoe with top-end features.

History : Gel Kinsei Series : Kinsei 4('11), Kinsei 3('09), Kinsei 2('07), Kinsei('05)

AHAR™+, Heel : 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.

Biomorphic Fit™ : Provides enhanced upper fit and comfort while decreasing potential for irritation.

Cuprothermo™ Mesh : Asics advanced upper material designed to aid temperature regulation within the shoe through effective heat distribution and enhanced moisture management, by retaining heat in cool weather and releasing it in hot weather.

Discrete Heel Unit : Takes the Impact Guidance System (I.G.S.®) to a new level by creating our highest degree of shock attenuation and stability

DuraSponge®, Forefoot : A new blown rubber compound for enhanced durability and cushioning in the forefoot.

Gel®, Forefoot n Heel : Provides maximum rearfoot and forefoot shock attenuation.

Guidance Line™ : Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency.

Heel Clutching System : Exoskelatal heel counter provides improved support and creates improved heel fitting environment.

I.G.S.® : Impact Guidance System : Asics® design philosophy that uses linked componentry to encourage optimal gait while allowing for natural foot movement from heel strike to toe-off.

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

Space Trusstic System™ : The system works with the complex functions of the foot to facilitate Windlass Mechanics. Space Trusstic is new I.G.S. componentry and an evolution, if not revolution of our benchmark trusstic technology. The Space Trusstic system is not integrated within the EVA. Rather it is suspended below the midsole EVA forming a distinct pocket or space into which the EVA of the mid foot section of the shoe can distort. The result is that torsion stability of the shoe is maintained but pressure on the plantar facia is released enabling tension with the transition from foot flat to propulsion. This is designed to facilitate the all-important Windlass Mechanism. Space Trusstic is a natural extension of I.G.S. and an enhancement of Windlass Mechanics.

Solyte™, Midsole : The advantage to injected Solyte® is a much more consistent density, ensuring that the desired softness is more ‘dialed in’ than standard compression molded midsole material. Injected Solyte® is also lighter than standard Solyte® contributing to the overall drop in weight.