Adapt Trail Runner - Review summary
Customers expressed they were made of quality, durable, and stylish materials. They mentioned an appreciation of the wide toe box and textured insole.
Customers shared how the additional traction allows them to wear them outdoors on trails, hiking, and casually.
A few customers mentioned that sizing could be difficult but recommend sizing a half size up if you want more room.
"Flux has become my new favorite. The stretchy upper, comfortable lower, and large toe box are perfect for my wider feet. Such a snug fit, and just enough stretch that they pull on like socks. They're also light as air.." - Thomas L.
"These shoes amazed me when I put them on! You really notice the difference in comfort with the wide toe bed and textured shoe bed. It felt like a massage for my feet, and my feet never felt tired after walking long distances. I tend to slip in mud/clay outside, so I'm excited to do my adventures in the mountains with these runners! Size true to number." - Abby A.
The Adapt Trail Runner
Inspired by the earth flexing under our feet, the Adapt Trail Runner was created for runners seeking peak flow state. This adventurous shoe adds all-terrain traction, an anti-debris collar, and our groundbreaking Earth-Link™ technology with all the Flux features you already know and love.



Our AdaptKnit™ upper is flexible and stretchy, plus it keeps pesky debris out while allowing air in.

Earth-Link™ helps reduce stress, improve sleep, and support recovery by reconnecting you to the earth’s natural energy.

Trinity Tread boosts traction on tough terrain, ensuring confident navigation over roots, rocks, and any obstacles.
Modern shoes limit your mobility. Natural movement shoes let them move as they should—building strength, improving balance, and supporting posture. With a wide toe box and zero-drop design, they help you move freely, comfortably, and naturally.
The amount of time it takes to transition to barefoot shoes varies for each individual, as everyone's feet are different and may adapt to the new shoes at different rates. However, the following general guidelines can help:
- Gradual transition: Gradually increasing the amount of time you spend in barefoot shoes can help reduce discomfort and allow your feet to adjust to the new sensation of walking without shoes.
- Start small: Begin by wearing barefoot shoes for a few hours at a time and gradually increase the duration as your feet get used to them.
- Listen to your body: Pay attention to any discomfort or pain you experience while wearing barefoot shoes. If you experience discomfort, take a break and switch back to your regular shoes for a few days.
- Give it time: It can take several weeks or even months for your feet to fully adjust to barefoot shoes, so be patient and persistent.
Keep in mind that everyone's feet are different and the transition time may vary. It's important to listen to your body and adjust accordingly to ensure a comfortable transition to barefoot shoes.
A wide toe box refers to the space at the front of a shoe, allowing the toes to align and spread naturally. This design helps reduce pressure on the toes, improving foot function and comfort. Flux shoes have a generous toe-box, thanks to the toe-off shape which creates ample room for the toes throughout the gait cycle.
Zero-drop means the heel and toe of the shoe are level, promoting a more natural foot position and stride.
Earth-Link is grounding tech that reconnects you to the Earth’s natural energy. By transferring electrons from the ground, it helps reduce stress and inflammation, improve sleep, and boost recovery.
- Enhances Connection to the Ground: Grounding (or earthing) allows the body to absorb electrons from the earth, which may help reduce inflammation, improve circulation, and support recovery.
- May Reduce Stress & Fatigue: Some research suggests grounding can help regulate circadian rhythms, leading to better sleep and reduced fatigue.
- Improves Stability & Balance: A direct sensory connection to the ground enhances proprioception, helping you react faster and stay balanced in motion.
Adapt Trail Runners fit small for most. We recommend sizing up a 1/2 size for the best fit. For more details, refer to our size chart for guidance on finding your perfect fit.
Spot Cleaning: Using water, mild soap, and a soft bristled brush or microfiber cloth, focus on the particularly dirty areas (outsole or on the shoe). Do not use bleach. Do not machine wash.