---
product_id: 746496184
title: "Aries Spherical Bike Helmet"
brand: "giro"
price: "€ 429.77"
currency: EUR
in_stock: true
reviews_count: 5
category: "Giro"
url: https://www.desertcart.nl/products/746496184-aries-spherical-bike-helmet
store_origin: NL
region: Netherlands
---

# Spherical Tech with MIPS for advanced impact protection 24 Wind Tunnel vents + DryCore for superior cooling AURA II Reinforcement Arch for shatter-resistant strength Aries Spherical Bike Helmet

**Brand:** giro
**Price:** € 429.77
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Ride Light, Ride Fast, Ride Protected — The Future of Cycling Helmets

## Quick Answers

- **What is this?** Aries Spherical Bike Helmet by giro
- **How much does it cost?** € 429.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/746496184-aries-spherical-bike-helmet)

## Best For

- giro enthusiasts

## Why This Product

- Trusted giro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Aerodynamic Edge:** 4% less drag than competitors thanks to streamlined design and chamfered edges—speed meets safety.
- • **Next-Level Cooling:** 24 optimized vents and DryCore sweat management keep you cool and dry on every ride.
- • **Custom Fit & Comfort:** Roc Loc 5+ Air system and plush DryCore brow pad ensure a secure, breathable fit for all-day rides.
- • **Revolutionary Impact Defense:** Spherical Technology powered by MIPS and Progressive Layering reduces injury risk—#1 rated by Virginia Tech.
- • **Unmatched Structural Integrity:** AURA II twin bridges deliver ultra-light, shatter-resistant strength without bulk.

## Overview

The Giro Aries Spherical Bike Helmet combines cutting-edge AURA II Reinforcement Arch technology with MIPS-powered Spherical impact protection and advanced ventilation through 24 Wind Tunnel vents and DryCore sweat management. Weighing just 270 grams, it offers a sleek, aerodynamic design that reduces drag by 4%, making it the top-rated helmet for injury prevention and cooling comfort among serious cyclists.

## Description

A helmet that feels like it isn't there: the all-new Aries™ Spherical is like nothing before. Its sleeker form and lighter weight (only 270 grams in size medium, CE certification), deliver sensational comfort and cooling power. Spherical Technology™, our ball-and-socket design powered by Mips®, adds protection by redirecting energy away from the brain in certain impacts, and Progressive Layering with dual densities of Nanobead EPS foam adds more comprehensive energy management. 24 Wind Tunnel vents are maximized by the AURA II Reinforcement Arch, while a plush DryCore™ brow pad manages sweat and combines with a network of intricately engineered deep internal channeling to elevate comfort. From the proven reliability and adjustability of the Roc Loc® 5+ Air fit system, to full lower hardbody coverage to enhance durability, to the meticulous production quality, the Aries is state-of-the-art performance, protection, and style.

Review: Great helmet, may need to size up - Reviewing a bike helmet is inherently subjective, but buying one online can feel like taking a shot in the dark. So I will try to offer some points to consider, as objectively as I can. TL;DNR: the Aires is a very high quality helmet that I think can be adjusted to fit most heads comfortably, as long as you start with the right size. My size large Aries weighs 311 grams, which is almost exactly what Giro specifies (310 grams), but 40 grams more than my old (too old, I know) Giro Atmos. That is the price you pay for the latest rotational protection systems, like Giro's MIPS Spherical technology. It's a fair trade-off, I think, for the highest safety ranking of any helmet tested by Virginia Tech's lab. My last two Giro helmets were size medium and fit well on my 59 centimeter oval-shaped head. But, with the Aires, I had to size up to large. The fit seems narrower than my previous Giro helmets, especially on the sides of the occipital lobe, but the large size was easily adjusted to fit comfortably. Not "like wearing nothing at all," but comfortable, with no pressure points. The vertical height adjustment of the RocLok retention system, which is designed primarily to level the helmet correctly, also made a noticeable difference in comfort. In sum, if you fall between sizes, be prepared to size up. When riding with your eyes looking straight ahead, the ventilation is very good, especially across the top of the head. If you tilt your head down so you're looking at the front wheel, it is fantastic. And the Drycore brow pad really works to keep the sweat from dripping into your eyes. I was amazed how much difference these two features make on summer rides in the southern California desert where I live. In the past, after an hour and a half in 90 to 100 degree heat, when I was wearing my Atmos, my face would be beet red, and I often felt light-headed. The Aries is a remarkable improvement, and has reduced my cool-down time from twenty minutes to five. I was worried that the brow band would feel hot, but that is not the case, probably because the rest of the forehead is so well ventilated. I chose the Matte Ano Blue color, which I suspect is one of the least popular. But I think it looks great in person, and is light enough and bright enough to rival or exceed white for visibility and heat reflectivity from the shell. As an aside, the helmet I received was likely a prior return (part of the box was missing), and I am fine with that. I think it's a fair trade-off for being able to exchange my original order for the larger size.
Review: Wow! Just wow! - First, I’m bad about replacing helmets every 5 years. Prior to purchasing this blue Giro Aries, I’d been using a Giro Aeon since 2014. Even though I wanted a helmet with MIPS, I couldn’t find any close in weight and ventilation to the Aeon. But it was time for an upgrade regardless of weight increases. My Aries was supposed to be delivered Tuesday, but instead was delivered later on Saturday. Not exactly PRIME shipping speed. But the helmet? Wow! Besides currently being rated as the #1 helmet in VaTech’s bicycle helmet safety ratings, the helmet is a vast improvement over the Aeon. Yes, it’s a little heavier than the Aeon, but not neck straining heavy. As for the ventilation and silicone sweat strip? Amazing! Being a lifelong Floridian, today’s sunrise ride involved 91% humidity with an actual temperature of 79F and a heat index of 87F. I’m a naturally sweaty person. I’m talking coming home completely soaked from just a November gathering with several games of corn hole. Today was a quite the soggy atmosphere for a ride. Anyway, the ventilation is noticeably improved across all areas of the helmet as compared the the long discontinued Aeon. And the anti-sweat strip? Not once…I repeat…not once did I have to do a helmet squeeze. Days like today usually involve a helmet squeeze every mile after a 15 minute warmup. No sweat dripping like a leaky faucet from the front of the helmet either. Yes, I still had to use my finger to squeegee my brow every mile, but that is far less inconvenient than leaning to one side and mashing my helmet into my forehead. I could wring my shirt out from all of the sweat, but this helmet didn’t require a single helmet squeeze during an hour long 17 MPH ride. The helmet fits my head like a glove as well. The new tensioner is an improvement over the Aeon as well. The Aeon clicked as the helmet tensioner was turned, which would result in steps of more tension. The new system is a continuous and smooth increase in tension as the dial is turned. No more “almost perfect” tension. The new system adjust easily in both directions, but remains in place when the dial is no longer being turned. Giro out did themselves with this helmet! Yes, it’s an expensive helmet. But consider it a 5 year insurance policy on hopefully keeping your brain intact.

## Features

- Structural Integrity - The proprietary AURA II Reinforcement Arch makes everything possible. These shatter-resistant, translucent twin bridges run throughout the helmet, providing structural integrity without adding unnecessary weight. Aries' ultra-low weight (~5% lighter than Aether), impressive cooling power and sleek, compact shape would not be possible without AURA II.
- Spherical Technology - This unique ball-and-socket design, powered by Mips, helps redirect impact forces. Spherical Technology also boasts more comfort, improved airflow, and Progressive Layering (which mates two densities of EPS foam to address a wide range of impact energy). The results are clear: independent authority Virginia Tech has rated Aries #1 in reducing the risk of injury.
- Cool Comfort - Deep internal channels connect with Aries' massive front and rear vents. This system provides a path for cool air to flow over the rider's scalp and exit the rear, taking excess heat with it. Aries also debuts our revolutionary DryCore sweat management system. A soft, silicone bead is hidden within the plush brow pad that redirects sweat away from the forehead and to the temples, where it can evaporate more easily
- Streamlined Speed - When it comes to going fast, smaller truly is better. To craft Aries, we focused on reducing the frontal surface area to eliminate more drag. Add in tiny details like chamfered edges on the AURA II, and meticulously engineered internal channeling that actually speeds up the air as it exits the helmet, and Aries emerges as the climbing helmet that doesn't sacrifice speed, reducing aerodynamic drag by 4% over Aether Spherical.
- Lighter, cooler, sleeker, plus all the added protection of spherical technology powered by MIPS and our new DryCore Sweat Management System: The Aries Spherical is like nothing before.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BHXVVD37 |
| Additional Features | adjustable |
| Age Range Description | Adult |
| Best Sellers Rank | #18,790 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #58 in Adult Bike Helmets |
| Brand Name | Giro |
| Color | Matte Carbon/Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (285) |
| Global Trade Identification Number | 00196178248181 |
| Included Components | Bike Helmet |
| Inner Material | Expanded Polystyrene |
| Item Dimensions | 8 x 8 x 8 inches |
| Item Type Name | Bike Helmet |
| Item Weight | 10 Ounces |
| Manufacturer | Giro |
| Manufacturer Part Number | 7149813 |
| Model Name | Aries Spherical |
| Model Number | Giro |
| Outer Material | Polycarbonate (PC) |
| Recommended Uses For Product | Cycling |
| Size | Small |
| UPC | 196178248181 |
| Unit Count | 1.0 Count |
| Warranty Description | Any Giro helmet determined by Giro to be defective in materials or workmanship within one (1) year from the date of original purchase will be repaired or replaced, at Giro’s option, free of charge when received at the factory freight prepaid, together with proof of purchase. |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Giro
- **Color:** Matte Carbon/Red
- **Size:** Small
- **Special Feature:** adjustable

## Images

![Aries Spherical Bike Helmet - Image 1](https://m.media-amazon.com/images/I/61oOJLWkNjL.jpg)
![Aries Spherical Bike Helmet - Image 2](https://m.media-amazon.com/images/I/614guMGaidL.jpg)
![Aries Spherical Bike Helmet - Image 3](https://m.media-amazon.com/images/I/61uhZ+vmT0L.jpg)
![Aries Spherical Bike Helmet - Image 4](https://m.media-amazon.com/images/I/614Gq-5oXKL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great helmet, may need to size up
*by C***T on August 16, 2023*

Reviewing a bike helmet is inherently subjective, but buying one online can feel like taking a shot in the dark. So I will try to offer some points to consider, as objectively as I can. TL;DNR: the Aires is a very high quality helmet that I think can be adjusted to fit most heads comfortably, as long as you start with the right size. My size large Aries weighs 311 grams, which is almost exactly what Giro specifies (310 grams), but 40 grams more than my old (too old, I know) Giro Atmos. That is the price you pay for the latest rotational protection systems, like Giro's MIPS Spherical technology. It's a fair trade-off, I think, for the highest safety ranking of any helmet tested by Virginia Tech's lab. My last two Giro helmets were size medium and fit well on my 59 centimeter oval-shaped head. But, with the Aires, I had to size up to large. The fit seems narrower than my previous Giro helmets, especially on the sides of the occipital lobe, but the large size was easily adjusted to fit comfortably. Not "like wearing nothing at all," but comfortable, with no pressure points. The vertical height adjustment of the RocLok retention system, which is designed primarily to level the helmet correctly, also made a noticeable difference in comfort. In sum, if you fall between sizes, be prepared to size up. When riding with your eyes looking straight ahead, the ventilation is very good, especially across the top of the head. If you tilt your head down so you're looking at the front wheel, it is fantastic. And the Drycore brow pad really works to keep the sweat from dripping into your eyes. I was amazed how much difference these two features make on summer rides in the southern California desert where I live. In the past, after an hour and a half in 90 to 100 degree heat, when I was wearing my Atmos, my face would be beet red, and I often felt light-headed. The Aries is a remarkable improvement, and has reduced my cool-down time from twenty minutes to five. I was worried that the brow band would feel hot, but that is not the case, probably because the rest of the forehead is so well ventilated. I chose the Matte Ano Blue color, which I suspect is one of the least popular. But I think it looks great in person, and is light enough and bright enough to rival or exceed white for visibility and heat reflectivity from the shell. As an aside, the helmet I received was likely a prior return (part of the box was missing), and I am fine with that. I think it's a fair trade-off for being able to exchange my original order for the larger size.

### ⭐⭐⭐⭐⭐ Wow! Just wow!
*by M***L on July 30, 2023*

First, I’m bad about replacing helmets every 5 years. Prior to purchasing this blue Giro Aries, I’d been using a Giro Aeon since 2014. Even though I wanted a helmet with MIPS, I couldn’t find any close in weight and ventilation to the Aeon. But it was time for an upgrade regardless of weight increases. My Aries was supposed to be delivered Tuesday, but instead was delivered later on Saturday. Not exactly PRIME shipping speed. But the helmet? Wow! Besides currently being rated as the #1 helmet in VaTech’s bicycle helmet safety ratings, the helmet is a vast improvement over the Aeon. Yes, it’s a little heavier than the Aeon, but not neck straining heavy. As for the ventilation and silicone sweat strip? Amazing! Being a lifelong Floridian, today’s sunrise ride involved 91% humidity with an actual temperature of 79F and a heat index of 87F. I’m a naturally sweaty person. I’m talking coming home completely soaked from just a November gathering with several games of corn hole. Today was a quite the soggy atmosphere for a ride. Anyway, the ventilation is noticeably improved across all areas of the helmet as compared the the long discontinued Aeon. And the anti-sweat strip? Not once…I repeat…not once did I have to do a helmet squeeze. Days like today usually involve a helmet squeeze every mile after a 15 minute warmup. No sweat dripping like a leaky faucet from the front of the helmet either. Yes, I still had to use my finger to squeegee my brow every mile, but that is far less inconvenient than leaning to one side and mashing my helmet into my forehead. I could wring my shirt out from all of the sweat, but this helmet didn’t require a single helmet squeeze during an hour long 17 MPH ride. The helmet fits my head like a glove as well. The new tensioner is an improvement over the Aeon as well. The Aeon clicked as the helmet tensioner was turned, which would result in steps of more tension. The new system is a continuous and smooth increase in tension as the dial is turned. No more “almost perfect” tension. The new system adjust easily in both directions, but remains in place when the dial is no longer being turned. Giro out did themselves with this helmet! Yes, it’s an expensive helmet. But consider it a 5 year insurance policy on hopefully keeping your brain intact.

### ⭐⭐⭐⭐⭐ Fantastic helmet!
*by M***I on February 9, 2026*

Granted, it's not cheap, but if you are on the market for a top-notch helmet, this one should make your short list. Great aeration, extremely lightweight, and - why not - very nice aesthetically. Compared to others I had in the past, the fit is perfect. I highly recommend it.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-06-04*