Onyx Coiler Performance, Comfort, Fit

This comfortable, forgiving mid-stiff boot is the easy-to-use, single-dial Boa® Coiler sister of the Trinity. The asymmetrical panels and lace-path design offer substantial support and a fabulous fit. The Bronze-Level Heat Moldable liner with cosy fur inside gives added hold around the ankles. The combination of the asymmetrical boot and heel-collar panels, with the reverse-cut cuff of the liner and flex-panel to accommodate different calf-muscle shapes guarantees a perfect ergonomic connection with the foot and lower leg.

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Closure System

Boa® H3 Coiler


B.F.T. FreeTrack

The B.F.T FreeTrack is a super durable, all-rubber outsole designed to support the anatomy of your foot and give you the authentic barefoot feel. Some models offer N-Gel cushioning in the heel for additional comfort.


Bronze-Level Heatmoldable Liner

Customizable fit and feel made affordable, with the Bronze-Level Heat Moldable liner. Targeted thermo-form foam, our innovative and comfortable reverse-cut top cuff, multi-layer J-bars and tethered liner lacing with a no-drift Velcro custom closure offer comfort and performance for happy feet, day after day, season after season.

Internal Closure

Liner Lacing


3D Molded Single-density

Pre-molded and anatomically shaped comfort EVA supports your feet, and a silicone top-print adds traction to the fleece-lined footbed.


Articulating Flex Zone

N-Gel Dampening

3D Molded Tongue

Antimicrobial and Moisture Wicking Liner