• Terrain


    Shoes best for road, track and light gravel. See the best road shoes.


    Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

    Good to know

    As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

  • Arch support

    Neutral / cushion / high arch

    Shoes for runners who do not need any additional arch support (Around 50% of runners). Best for people with normal, high or medium high arches. See the best neutral shoes.

    Stability / overpronation / normal arch

    Shoes for runners who need mild to moderate arch support (Around 45% of runners). Best for runners with a low arch. See the best stability shoes.

    Motion control / severe overpronation / flat feet

    Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

    Good to know

    - Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
    - More about arch support in this video.
    - Find your arch type by following steps from this video.

  • Use

    Daily running

    Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


    Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

    Good to know

    If you want just one pair of shoes, buy a shoe for daily running.

  • Price
  • Weight
    Men: 11.2oz
    Women: 9.1oz
  • Heel to toe drop
    Men: 10mm
    Women: 10mm

    The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

    There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.

  • Heel height
    Men: 23mm
    Women: 22mm
  • Forefoot height
    Men: 13mm
    Women: 12mm
  • Width
    Men: Normal
    Women: Normal, Wide
  • Release date
Show more facts


Expert Reviews

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  • First look / Unboxing | Shop Zappos

  • First look / Unboxing | Shop Zappos

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  • The Gel Flux 5 is an Asics running shoe that has a minimalist construction. It moves away from the stitched-overlay-laden configuration of its immediate predecessor, the Gel Flux 4. It now features a set of printed overlays that don’t add bulk to the façade.
  • The midsole unit utilizes a full-length foam to carry the foot throughout the running session. Wedged in the heel and forefoot areas are two Gel® units, silicon-based cushioning pieces that attenuate impact shock during the foot-strike.
  • Carbon rubber and blown rubber are compounds that provide surface traction. While the former acts as a shield against wear and tear, the latter offers additional cushioning through its pliable build.

The Asics Gel Flux 5 makes use of the standard measurements to achieve a true-to-size coverage. So lengthwise, it accommodates the usual choices of consumers. When it comes to width, the options are D – Medium for men and B – Medium for women.

The form-fitting last and upper construction obliges the natural curvature of the human foot.

The forefoot section of the Asics Gel Flux 5 features the DuraSponge, which is made of blown rubber. This material is durable and capable of providing traction, but it also offers some cushioning because it has a soft structure.

Same as with the popular Asics Gel Cumulus 20, the Gel Flux 5's outsole heel section is covered with the AHAR® or the Asics High Abrasion Rubber. It’s a durable compound that’s meant to resist wear and tear while also delivering surface grip.

Flex grooves allow the runner to bend the toe joints efficiently, thus energizing and enabling the toe-off phase of the gait cycle.

SpEVA is a proprietary foam that’s designed to provide responsive cushioning. It transfers kinetic energy to the foot and leg of the wearer, thereby energizing each step.

The heel and forefoot portions of the Asics Gel Flux 5’s platform makes use of the Gel® Cushioning System which is composed of a silicon-based material. Its job is to absorb the impact shock generated by the foot-strike, thus easing the landings.

A vertical groove called Guidance Line leads the foot towards a structurally and mechanically smooth gait transition.

The Guidance Trusstic System is a plastic add-on that bolsters the structural integrity of the midfoot section. It aims to support the foot-pad and ease the tension on the muscles and tendons.

An ethylene vinyl acetate (EVA) sock liner is placed right above the main cushioning foam. This extra layer is intended to keep the foot rested on a soft platform. It can be removed or replaced with a custom insert.

Open Mesh is a material that is soft and flexible. It accommodates the natural shape and motion of the foot. It is also breathable as it has many ventilation pores on its surface.

Printed overlays strengthen the sides of the upper unit. These thin additions are also designed to hug the foot and keep it in place.

A traditional lacing system graces the Asics Gel Flux 5. It makes use of semi-flat shoestrings, non-prominent round eyelets, and printed reinforcements. These elements work together to ensure a snug, secure yet customizable fit.

The padded tongue and collar bring cushioning to the ankles, heel, and instep, and they prevent in-shoe wobbling.