Change one variable.
Keep shoe, activity and time as similar as possible.
D7 zoned construction
Different zones.
Different jobs.
Open knit above. Cushioned terry below. Layered hold at the Achilles. D7 puts a different kind of comfort where each part of the foot needs it.
Zone 01
21,000instep openings
A knit map with 21,000 breathable openings sits across the instep, placing the more open structure above the foot while the underside stays cushioned.
Open the airflow study ↗A fair comparison
Change only
the sock.
D7 puts open knit above the foot and cushion underneath it, so thickness alone cannot tell you how a sock will feel. Compare both pairs under the same conditions.
Keep these constant
01Same shoeSame fit and ventilation
02Same activitySame movement and pace
03Same durationEnough time to notice
STEP 01Choose your real use case
Wear one pair, reset, then repeat with the other. This is an at-home wear comparison, not a laboratory result; keep the conditions as consistent as possible.
STEP 02 · YOUR TEST PLAN45–60 min
Same workout
Repeat the same session at a similar pace and in the same shoes.
After each session, check
01Instep airflow
02Underfoot cushion
03Heel movement
Lab rules
Test the full session.
First touch is useful. Hour-two comfort is more useful.
Describe, do not diagnose.
We build performance comfort, not medical promises.
Beyond D7
One current product.
Two ideas next.
D7 is the current production series. F1 and R1 stay labeled as concepts until physical samples and wear testing define the final products.