NaturalFit™ · Fit & width

Tailor your fit

NaturalFit™ locks in the heel and midfoot, then widens at the forefoot so the toes can splay and grip — stability the way the foot is built to work.

This shoe
Standard

Standard

More contained forefoot

For cardio movements, where a more contained forefoot helps speed and rebound.

Used on: F-FLY™
Not offered
Wide

Wide

Wider forefoot · free toes

More room up front for weight-bearing work — toes splay for a stable base under the bar.

Used on: F-LITE™ · F-LITE™ MAX · BARE-XF™
Not offered
Precision

Precision

Narrowest toe-box

Our narrowest fit, reserved for off-trail running shoes needing a dialled-in hold.

Used on: X-TALON™ PRO · MUDTALON™
Technical specifications

Every number

Dimensions
Total stack

Heel: 18.5mm / Forefoot: 14.5mm

Drop

4mm

Stack breakdown

Midsole: 10mm/6mm, Footbed: 5mm, Lugs: 3.5mm

Weight

210g

Midsole / outsole
Midsole foam

Compression moulded EVA

Outsole pattern

F-Lite

Outsole rubber

Enduro Grip™

Upper
Fit
NaturalFit™ Standard
Material

Engineered air mesh / KPU

Tongue

Integrated bellows tongue

Training profile
Discipline

Cardio training

Cushioning

PowerFlow™ Pro

Comparison

Where it sits in the training range

Model Discipline Fit Stack Drop Cushioning Price
F-FLY™ This shoe Cardio Standard 10/6 mm 4 mm PowerFlow™ Pro 179.99
F-FLY™ MAX Cardio Standard 11/17 mm 6 mm FlySpeed™ 199.99
F-LITE™ Versatility Wide 12/8 mm 4 mm PowerFlow™ Max 189.99
F-LITE™ MAX Versatility Wide 14/8 mm 6 mm PowerFlow™ Max 199.99
BARE-XF™ V2 Natural Wide 0/0 mm 0 mm - 159.99
BARE-XF™ PRO Natural Wide 0/0 mm 0 mm - 199.99
Technology

Built for speed

Every F-FLY™ is built around one idea — get out of the way and let you move. Here's what makes it fast.

Explosive

4mm drop keeps you low and connected — no heel elevation pushing you forward on landings. The Heel: 18.5mm / Forefoot: 14.5mm stack is thin enough to keep your foot speed sharp through plyometrics, rope work and sprints.

// 4mm drop · Heel: 18.5mm / Forefoot: 14.5mm

Light

210g. One of the lightest training shoes we make. Less weight on your foot means faster turnover, cleaner movement patterns and less fatigue over long cardio sessions.

// 210g · ultra-light

Reactive

Compression moulded EVA foam compresses on impact and springs back immediately — returning energy into your next step or jump. NaturalFit™ Standard fit locks the heel so energy transfers forward, not sideways.

// Compression moulded EVA · NaturalFit™ Standard
CONSTRUCTION

FROM THE GROUND UP

F-Fly Womens
1. Engineered Air Mesh Upper
Breathable mesh with 3D printed construction and supportive MET-CRADLE keeps feet cool and stable during intense workouts.
2. POWERFLOW PRO Midsole
Bouncy, cushioned foam that balances responsiveness and ground-feel for running and high-impact exercises.
3. ROPE-TEC
Embedded technology in the midsole and arch protects against rope friction and increases durability during rope climbs.
4. BOOMERANG Footbed
Foam beads deliver 40% energy return per stride, maximizing efficiency during cardio and longer workouts.
5. Grippy Rubber Outsole
Lightweight 2.5mm rubber outsole that grips through weightlifting, cardio, functional training, walking, and running.
Need help?

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Not sure about the model or size? Our team is here to guide you to the right product and the right fit.

+1 (514) 850-5585 #234 · Mon–Fri: 09:00–17:00 EST

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