# Open-face helmet GIRO Ratio Mips — hard shell, In Form fit, Stack Vent, matt finish

**URL:** https://aio.lv/en/product--giro-gr-7172904--12370775
**Data updated:** 2026-04-23 13:19 (EEST)
**Category:** Protective Helmets
**Manufacturer:** GIRO
**Manufacturer code:** GR-7172904
**EAN:** 196178228527
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 110.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 91.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--giro-gr-7172904--12370775

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

GIRO Ratio Mips is an open-face bicycle helmet with a hard shell construction, MIPS rotational protection, In Form fit system for secure adjustment and Stack Vent ventilation for airflow. The matt finish reduces glare. Designed for urban and recreational cycling, it offers head impact protection and comfortable, adjustable fit for daily rides.

## Long description

The GIRO Ratio Mips open-face helmet combines hard-shell durability with Mips rotational protection and an adjustable In Form fit system. Its Stack Vent ventilation and Thermostat Control allow fast, simple airflow adjustment, while a matt finish reduces glare. Designed for urban and recreational cycling, the Ratio offers dependable head protection, compatibility with Giro goggles and optional aftermarket audio systems.
Advantages
The helmet integrates a Mips slip plane to help reduce rotational forces in certain impacts and features a two-piece hard-shell construction with a polycarbonate lower wrap for durability without excessive weight. The In Form fit system provides up to 6 cm of quick, tool-free adjustment for a secure fit, and Stack Vent alignment with goggle vents helps reduce fogging. Thermostat Control gives immediate, low-profile vent control for on-the-go comfort.
Suitable for
Urban commuting and city cycling
Recreational rides and light touring
Riders looking for a low-profile open-face helmet with adjustable ventilation
Users who want compatibility with Giro goggles and aftermarket audio systems
When it may not be suitable
The open-face design does not provide full-face coverage required for downhill mountain biking or motorized sports. Riders seeking maximum chin and face protection or a full-face helmet should consider specific full-coverage models instead.
Key specifications
Shell type: two-piece hard shell with in-mold polycarbonate lower wrap
Protection system: Integrated Mips slip-plane rotational protection
Fit system: In Form dial-fit with up to 6 cm adjustment
Ventilation: Stack Vent plus Thermostat Control adjustable venting
Finish: matt
Compatibility: designed to interface with Giro goggles; compatible with some aftermarket audio systems
How to use
Place the helmet level on your head and fasten the chin strap so it sits snugly beneath the chin. Use the In Form dial at the back to fine-tune fit—turn until the helmet feels secure without pressure points. Adjust the Thermostat Control button to open or close vents for desired airflow. Align goggles with the helmet’s Stack Vent to reduce fogging and attach compatible audio accessories if required following the accessory manufacturer’s instructions.
What to consider before purchase
Choose the correct size for head circumference to ensure proper fit and safety
Open-face design is not suitable for activities needing chin or face protection
Check compatibility if you plan to use specific aftermarket audio systems
Usage recommendations
Inspect the helmet regularly for signs of damage and replace it after any significant impact. Clean with mild soap and water and avoid solvents that can degrade materials. Follow Giro and accessory manufacturers’ instructions for proper fit and accessory installation.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.61 kg |
| Product colour | Stone colour |
| Finish type | Matt |
| Gender | Unisex |
| Durable design | Yes |
| Ventilation | Yes |
| Construction type | Hard shell construction |
| Season | Winter |
| Quantity per pack | 1 pc(s) |
| Coloration | Monochromatic |
| Adjustable fit | Yes |
| Head circumference | 52 - 55.5 |
| Ventilation type | Adjustable |
| Helmet type | Open-face helmet |
| Removable inner pads | Yes |
| Lightweight | Yes |
| Protection brand specific features | MIPS Brain Protection System (BPS) |
| Goggle strap holder | Yes |
| Removable ear pads | Yes |
| Removable goggle strap holder | Yes |
| Fitting system | In Form fit system |
| Ventilation position | Back vents, Front vents, Top vents |
| Pre-shaped design | Yes |
| Helmet audio system compatibility | Yes |
| Protection foam material | Expanded polystyrene (EPS) |
| Consumer life stage | Adult |
| Activity | Snowboarding, Skiing |
| Sports headwear type | Helmet |
| Eyewear compatibility | Yes |
| Winter kit compatibility | Yes |
| Size (S/M/L) | S |

## FAQ

### How much does the GIRO Ratio Mips open-face helmet cost, and is it available for purchase?

The price is 110.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can GIRO Ratio Mips open-face helmet be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All GIRO products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized GIRO service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12370775/68492792_large.webp