Giro Fathom
Black/Highlight Yellow
Please select options


If you ride everything and ride fast, you need the same cool comfort and performance whether you’re on the open road or your favorite singletrack. Giro's Fathom is a twin to the legendary Atmos, a breakthrough helmet design that offers amazing ventilation thanks to a clever internal reinforcement structure. The compact design is a style leader, and matched with a removable adjustable visor and the two-way adjustable Roc Loc 5 fit system, offers the performance and versatility you need.

- Small = 51-55cm
- Medium = 55-59cm
- Large = 59-63cm

Part Numbers

Option UPC MPN Store SKU
Black/Highlight Yellow / Small 768686546532 7054800 GIR31164412S
Black/Highlight Yellow / Medium 768686546549 7054801 GIR31933996M
Black/Highlight Yellow / Large 768686546556 7054802 GIR31464452L


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