[ Our 5-Step Fit Process ]
The whole process, including insertion of parts into the shoe, takes just a few minutes. The result is a fully assembled, customized shoe that you can walk away with!
The Somnio fit process works in 5 easy steps:
- The individual stands on our patented Line-Up device.
- The fitter adjusts the varus until the knee is aligned.
- The fitter uses the arch ball to select the correct footbed.
- The fitter uses the chart to select the correct Ind-X inserts.
- Then, the fitter slides the F.E.A.T system into the shoe for the individual to try.
BEYOND SHOE SIZE AND PRONATION: HOW TO TRULY CUSTOMIZE A SHOE.
The Line Up Measuring Device is our patented fitting tool.
The biomechanic design is a result of our partnership with the Boulder Center for Sports Medicine. While the individual stands barefoot upon the Line Up Device, the fitter uses the adjustable slides to easily determine:
- Which footbed fits their arch
- Which cushion is appropriate for their weight and running surface
- Which varus wedge inserts best align the foot and lower leg

Step 1A

Step 1B

Step 2A

Step 2B

Step 3

Step 4

Step 5
Step 1: Line Up Device
Standing barefoot alignment assessment:
- The shoe fitter measures arch height (Low, Normal, High) and pronation (Neutral, Mild, Moderate, Significant).
- Supinators should chose a neutral model shoe to encourage any pronation.
- Cushioning is selected based on body weight.
The individual does a single leg squat on the Line Up Device:
- The individual places their heel against the heel cup. This allows the inherent tibial torsion of the lower leg (degree varies between people) to place the foot naturally vs. forcing the foot straight forward and imposing an internal rotation of the knee/femur.
- Fitter lines up laser on middle of patella.
- The individual perform a single leg squat (1/3 knee bend) while looking straight forward.
- The individual performs a few repetitions of the squat so the fitter can assess typical running patterns.
Step 2: Adjust Varus
- The fitter adjusts the varus using our patented Line Up Device.
- The fitter adjusts the balance of the Line Up Device to optimize the alignment of the laser tracking on your patella.
Step 3: Use Arch Ball
In this step the fitter will select your ideal arch height based on:
- Archometer.
- General visual assessment of arch height (Low, Normal, High).
- Historical tolerance of arch support (this is determined during your initial questioning).
Step 4: Select Components
The fitter will use the Durometer Gauge, your general weight and the varus setting to select your correct inserts.
- Durometer will initially be based on body weight or injury needs and then be adjusted to accommodate for fit.
Step 5: Shoe Trial
- Place the Functionally Engineered Adaptable Tricomponent [FEAT] System into the shoe.
- The fitter will use their biomechanical knowledge to make specific adjustments to get the best shoe fit. Any necessary adjustments are based on how the shoe actually fits and feels.
Modifications:
- The shoe fitter’s first priority is addressing any alignment needs with appropriate canting changes.
- They will modify durometer of inserts to provide a good balance between comfort/feel and injury needs.
- Arch height is typically a straight forward decision.


