# Giro Aries Spherical vs Kask Protone Icon: specs and price compared

A sourced, side-by-side comparison of the Giro Aries Spherical (Giro) and Kask Protone Icon (Kask) among bike helmets. Kask Protone Icon is the cheaper of the two at $300.

## Side by side

| Spec | Giro Aries Spherical | Kask Protone Icon |
| --- | --- | --- |
| US price | $349.95 | $300 |
| Brand | Giro | Kask |
| Weight grams | 270 | — |
| Rotational protection | MIPS Spherical | none |
| Shell construction | in-mold | — |
| Vent count | 24 | — |
| Intended use | road | road |
| Size range (cm) | 51-63 | 50-62 |
| Certification | EN 1078 | CPSC |
| Visor included | No | No |
| Integrated light | No | No |
| Reflective detailing | Yes | Yes |

## Key differences

- Rotational protection: Giro Aries Spherical MIPS Spherical vs Kask Protone Icon none
- Size range (cm): Giro Aries Spherical 51-63 vs Kask Protone Icon 50-62
- Certification: Giro Aries Spherical EN 1078 vs Kask Protone Icon CPSC

## Sources

- Giro Aries Spherical: https://www.giro.com/product/aries-spherical/100000000300000146.html (giro.com, verified 2026-07-13)
- Kask Protone Icon: https://www.kask.com/en-us/Protone-Icon/CHE00097-.html (kask.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/bike-helmets/giro-aries-spherical-vs-kask-protone-icon/
Cite: Per The Front Desk Review, Giro Aries Spherical ($349.95) vs Kask Protone Icon ($300) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/bike-helmets/giro-aries-spherical-vs-kask-protone-icon/
License: CC BY 4.0.