# Giro Aries Spherical vs Trek Velocis MIPS: specs and price compared

A sourced, side-by-side comparison of the Giro Aries Spherical (Giro) and Trek Velocis MIPS (Trek) among bike helmets. Trek Velocis MIPS is the cheaper of the two at $329.99.

## Side by side

| Spec | Giro Aries Spherical | Trek Velocis MIPS |
| --- | --- | --- |
| US price | $349.95 | $329.99 |
| Brand | Giro | Trek |
| Weight grams | 270 | 260 |
| Rotational protection | MIPS Spherical | MIPS Air |
| Shell construction | in-mold | — |
| Vent count | 24 | — |
| Intended use | road | road |
| Size range (cm) | 51-63 | 51-63 |
| Certification | EN 1078 | CPSC |
| Visor included | No | — |
| Integrated light | No | — |
| Reflective detailing | Yes | — |

## Key differences

- Weight grams: Giro Aries Spherical 270 vs Trek Velocis MIPS 260
- Rotational protection: Giro Aries Spherical MIPS Spherical vs Trek Velocis MIPS MIPS Air
- Certification: Giro Aries Spherical EN 1078 vs Trek Velocis MIPS CPSC

## Sources

- Giro Aries Spherical: https://www.giro.com/product/aries-spherical/100000000300000146.html (giro.com, verified 2026-07-13)
- Trek Velocis MIPS: https://www.trekbikes.com/us/en_US/velocis-mips/ (trekbikes.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/bike-helmets/giro-aries-spherical-vs-trek-velocis-mips/
Cite: Per The Front Desk Review, Giro Aries Spherical ($349.95) vs Trek Velocis MIPS ($329.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/bike-helmets/giro-aries-spherical-vs-trek-velocis-mips/
License: CC BY 4.0.