inov-8 Women's Trailfly Ultra G 300 Max Trail Running Shoe

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The revolutionary Trailfly Ultra G 300 features a graphene-enhanced G-FLY™ foam midsole, a wonder foam that supercharges your feet all day with a scientifically proven 25% great energy return and its ability to retain optimum levels of underfoot rebound and cushioning for longer so you can feel faster and fresher over longer distances. Other features include an ADAPTER-FLEX™ groove to adapt and react to terrain like no other and a GRAPHENE-GRIP™ outsole for the toughest traction on any terrain.


  • Fit scale 5: wider fit boosts comfort over long distances
  • First max cushioned hiking boot that adapts and reacts to terrain
  • Intended terrain: hard and rocky, paths and trails, road
  • Knitted mesh upper for comfort and breathability
  • Boomerang footbed gives 40% more bounce than standard ones
  • Graphene-enhanced G-FLY™ foam midsole for more bounce and cushioning supercharges your feet so you can run further
  • Adapter-Flex™ groove allows the shoe to adapt, react and mould to uneven terrain for a responsive, agile feel that is free of rigidity but full of cushioning
  • GRAPHENE-GRIP™ rubber delivers insane sticky traction and increased durability, no compromise; 50% stronger, 50% more elastic and 50% harder wearing all extending the life of the outsole
  • 4mm lug-depth for uncompromising trail grip
  • 6mm heel-to-toe drop (midsole stack height 25mm / 19mm)


Insole Boomerang footbed
Midsole G-FLY™ foam
Support/Shank DFB™
Average Weight 300g

G-FLY™ foam: Graphene-enhanced G-FLY™ foam retains its optimum levels of cushioned thickness and snappy energy return for longer, helping long-distance hikers fell fresher over longer distances.

Dynamic Fascia Band™ (DFB): replicates the anatomical position of the plantar fascia ligament and duplicates the function of the human's foot ability to use the "windlass effect". The inov-8 fascia band™ also replicates the benefits of the windlass effect of the human plantar structure. Originating at the front of the heel's outsole the fascia band extends forward along the outsole and divides, just as the human fascia divides, into 5 bands that terminate anterior to the metatarsal heads. As body weight moves forward onto the metatarsal heads and the toes begin to extend, tension on the inov-8 fascia band™ increases. When the heel leaves the ground, the inov-8 fascia band™ resists elongation of the medial arch and carries the entire body weight of the runner converting the shoe into a rigid propulsion lever.

Graphene: is a sheet of carbon just one atom thick and is the strongest material on earth, 200 times stronger than steel, as well as the thinnest. Graphene is extraordinarily flexible and can be bent, twisted, folded and stretched without damage and is almost entirely transparent. Infused into rubber in the inov-8 G-Series of shoes has proven to make them 50% stronger, 50% more elastic and 50% harder wearing. This graphene-enhanced rubber can flex and grip to all surfaces more effectively without wearing down quickly to provide a reliably strong, long-lasting grip.

Boomerang footbed: Giving you 40% greater energy rebound, the unique BOOMERANG footbed is the ultimate cushioned insole for all sports shoes. As your foot strikes the ground our revolutionary foam structure retains more energy than ever before. Hundreds of expanded TPU beads compress and then spring back, releasing that energy to propel your forwards with increased speed and bounce. Meticulously designed and rigorously tested to retain its thickness and optimum performance level for far longer. The BOOMERANG insole fits most sports shoes, can be easily switched in and out of different pairs, and grips tightly underneath to ensure no slippage.


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