Easy Flex
Minimal-control athletic performance — a thin, semiflexible frame that compresses and rebounds with every stride, built congruent for full rearfoot control without controlling the midfoot.
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Built for dynamic motion and minimal correction.
The Easy Flex combines full rearfoot control without controlling the midfoot — a thin polypropylene frame that compresses and rebounds with every stride for a more dynamic range of motion than a typical orthotic. Ideal for active patients who can't tolerate the corrective pressures of more traditional devices.
Rebound, not restriction. The arch compresses and rebounds each stride, still generating a neutral foot alignment — built congruent to the patient's own foot model, not an average.
Athletic shoes with removable insoles
Best in athletic footwear with a removable sock liner, where the thin, flexible frame has room to compress and rebound.
Minimal biomechanical control
For active, middle-aged patients who need light correction and can't tolerate the pressures of more rigid orthotics.
Dynamic range of motion
Full rearfoot control without controlling the midfoot — a more functional option than cushioned accommodative devices.
Functional correction, congruent to the foot.
Built from a positive model of the patient's foot and modifiable at the clinician's discretion — scanned and ordered through FootID Pro.
Shape is everything.
What separates Root from generic insoles is the precise morphological shape captured from the patient's foot — held in the exact clinical position the clinician chose. No averaging. No guesswork.
The Easy Flex is built from a positive model of the patient's foot and can be modified at the practitioner's discretion. This means every device fits the patient it was made for — not an approximation.
Modern Root
Width adjusted considering both borders. Default for all Root models.
Traditional Root
Justified to the lateral border. Used for specific clinical indications at practitioner discretion.
Modern Root shape process
- Forefoot balanced to rearfoot — forefoot-to-rearfoot relationship is optimised as the first step in shape modification.
- Fat pad expanded ~3mm — ensures the device fills the calcaneal contour precisely for the patient's heel.
- Arch lowered ~3mm — creates optimal heel-to-arch-to-met-head geometry. Not applied to foam impressions.
- Width tuned to both borders — medial and lateral widths considered together, giving a foundation that matches the patient's actual foot width.
*Subtalar joint neutral is found by palpating the talus head against the navicular. The neutral position can present many joint-on-joint and bone-on-bone relationships and varies from person to person. An everted or inverted calcaneus may be a neutral position for an individual person. Biomechanical evaluation required.
How you hold the foot is what we build.
Root is not just the orthotic — it's the clinician's positioning, captured and preserved in the device. After scanning, FootID Pro asks the questions no other lab asks.
After every scan, we need to know:
- Was the subtalar joint held in neutral?
- Was the midtarsal joint maximally pronated — loading the 5th metatarsal head?
- Was the midtarsal joint maximally supinated — loading the 1st metatarsal head?
- Was the forefoot brought perpendicular to the rearfoot?
- Was a forefoot-to-rearfoot balance bisection achieved at 90° relative to the calcaneal bisection?
The positioning of those 19 joints in the foot is what gives us the shape.
CAD/CAM fabrication
- Scan or cast captured — clinician captures foot morphology via FootID Pro, holding the subtalar joint in the chosen clinical position.
- Shape modification applied — forefoot balanced to rearfoot, fat pad expanded, arch adjusted using Root's design process.
- Technical staff review — every device reviewed against Traditional Root, Modern Root, Blake Inverted, or Accommodative principles.
- Fabricated to the shape — the polypropylene frame and EVA post are fabricated to match the submitted shape precisely.
See how the scan becomes an order.
Watch Kevin capture a foot, confirm the clinical position, and send a Root order — start to finish.
Variation converted to anatomy-match accuracy by impression & fabrication method
How closely each method preserves the patient’s intended foot shape. Scale: 0–100%, where 100% = optimal congruence.
Plaster bandage is wrapped around the foot in the clinician’s prescribed corrected position, setting into a precise negative of the foot’s contour.
The foot is pressed into a crushable foam box, leaving a negative impression of the plantar surface.
An existing positive model from the patient’s previous orthotics is reused — KevinRoot accepts models from any lab, with frame-contour variance as low as 1%.
A digital scanner such as FootID Pro captures the foot surface as a 3D model.
A fiberglass casting sock is applied over the foot and cures to capture its contour.
Pedobarography captures the patient’s plantar pressure distribution (static or dynamic) at 1:1 scale — used with arch height and shoe size to select a redimold positive model, not to capture true 3D contour.
A direct-molding system using prefabricated, size- and arch-based positive models (33 in total) rather than an individual foot impression.
Heated material is vacuum-pressed over a plaster positive model, drawing it intimately into every contour.
The frame is 3D printed by selective laser sintering (SLS) directly from the CAD-designed digital frame.
A positive model is CNC-milled (CAD/CAM) from an STS, 3D scan, plaster, or foam impression, then the frame is vacuum formed over it.
A CNC machine subtractively mills the frame from a block of polypropylene or EVA per the digital design.
*Redimold has no physical or digital foot impression — patient-foot-to-cast congruent accuracy is unavailable. Variation from positive model to frame is low.
How your patient's foot shape becomes a precision frame.
The journey from clinical capture to finished Easy Flex frame is where Root's expertise lives. Every step preserves the shape and position the clinician chose for that patient.
- Foot impression captured — the clinician captures the foot using their preferred method. How the foot is held directly determines the congruency of the finished device.
- Positive model created — the impression becomes a physical plaster model or a digital CAD/CAM model. Digital models are stored indefinitely for future pairs.
- Root technicians modify the shape — every modification reviewed against the prescription. Rearfoot post, heel cup depth, and cover selection confirmed per patient.
- Easy Flex frame fabricated — a thin, semiflexible polypropylene frame is vacuum formed over the positive model and calibrated by weight to compress and rebound each stride. A Myolite arch fill, 3mm Spenco top cover, and suede bottom cover are applied with an intrinsic rearfoot post, forefoot balanced to rearfoot.
FitFoot360 Foot Model
- Root digital model stored indefinitely → recalled for future pairs
- Root technicians modify the digital shape in real-time: arch, heel, width, postings
- Vacuum formed over CAD/CAM positive model, direct milled or 3D printed Root Frame — replicable, consistent, precise
Real-time control over shape, function, and fit.
FitFoot360 gives Root's technicians complete digital control over every dimension of the orthotic frame — in real time. What once required physical carving and guesswork is now precise, repeatable, and stored permanently for every patient.
Digital positive model
Stored indefinitely. Future pairs, replacements, or modifications can be fabricated from the exact same shape without a new impression.
Real-time shape modification
Root technicians control arch, heel, width, and postings directly in the software.
Every parameter visible
Heel cup depth, frame reinforcement, ray cut-outs, flanges, and more are set per patient, not per template.
Plaster and foam digitisation
Physical models can be digitised for permanent storage. Note: digitising may not perfectly replicate the intimate contours achieved when vacuum forming directly over plaster.
Built to their spec. Built for their foot.
Every parameter of the Easy Flex is set to the individual patient — frame rigidity, rearfoot posting, heel cup depth, and covers are all chosen for that patient's anatomy, weight, and activity demands. Forefoot is balanced to rearfoot and the device is custom congruent to the foot model.
A thin, semiflexible polypropylene frame calibrated to patient weight — full compression and arch rebound with every stride for a dynamic range of motion.
A soft Myolite arch fill combines with the flexible frame for maximum shock absorption — reducing pressure on the arch.
An intrinsic rearfoot post is built into the frame itself — low-profile stability without adding bulk beneath the heel.
Pressed directly from the patient's calcaneus, the heel cup fits their heel precisely — controlling their specific degree of inversion and eversion.
A cushioned 3mm Spenco top cover adds comfort and moisture control underfoot for active wear.
No forefoot extension — the device is arch-length, keeping it low-profile for athletic footwear.
Suede bottom cover protects the polypropylene frame and seats cleanly on the shoe's footbed across shoe environments.
The full picture.
Everything you need to prescribe the Easy Flex.
- Bone deformity
- Foot deformity
- Arthritis
- Musculoskeletal pathology
- Lower extremity pathology
- Poor posture
Recommended for
- Athletic shoes with removable insoles
- Active lifestyle patients
- Minimal correction needs
The Easy Flex offers full control of the rearfoot without controlling the midfoot. A thin polypropylene frame compresses and rebounds with every stride, providing a more dynamic range of motion than a typical orthotic, and combines with a Myolite arch fill for maximum shock absorption.
It reduces pressure on the arch — ideal for patients who can't tolerate the corrective pressures of traditional orthotics — while the arch rebound still generates a neutral foot alignment. Best for active, middle-aged patients needing minimal control. Built from a positive model of the patient's foot and modifiable at the practitioner's discretion.
- L3000 (UCB)
- L3010 (longitudinal/metatarsal support)
- L3020 (arch support)
- L5000 (filler)
Based on configuration. For reference only. Final coding and billing are the provider's responsibility.
Delivery Time
- Standard: 2 weeks
- Expedited: Available on request
Rearfoot control with a rebounding midfoot.
The Easy Flex pairs a thin, semiflexible polypropylene frame with an intrinsic rearfoot post — delivering full control of the rearfoot while the midfoot compresses and rebounds with every stride. The 12mm heel cup controls inversion and eversion of the calcaneus, stabilizing the foot at the subtalar joint through the gait cycle.
A Myolite arch fill maximizes shock absorption and reduces pressure on the arch, while the rebound effect still generates a neutral foot alignment — a functional alternative to cushioned accommodative devices for patients who can't tolerate rigid correction.
The right frame
for minimal control.
Easy Flex sits on the Performance frame profile — a thin, semiflexible platform built
for dynamic motion and light correction in athletic footwear.
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