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The F3 has no less then
four patent pending
features:
Biomorphic 3D Chassis that precisely
matches your foot curvatures and provide maximal
comfort and grip.
In Molded Strap Receivers - increases strap
strength & reduces bulk
Outsole Design – Herringbone design provides
better peg interface
Fold-Over Burn Guard & Extreme Seal Top Gasket
that works perfect.
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