- Brand: Giro
- Color: Highlight Yellow/Black (Discontinued)
- Age Range (Description): Adult
- Size: Small (51-55 cm)
- Outer Material: Polycarbonate
- MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash
- VENTILATION: 25 wind tunnel vents with internal channeling
- COMFORT: Easily adjust vertical position and tension with the Roc Loc 5 fit system
- LIGHTWEIGHT: In-moIding construction



























dp –
I dont like how it looks but it fits well. Not sure what headshape I have but I tried the Giro Synthe helmet in M and L size and the POC Omne Air SPIN helmet in M and L size. ALL of them were too small. When putting them on I could feel slight pressure near my temples. Once on, it wasnt too uncomfortable but I had a feeling after a while it would be more noticeable. This Giro Syntax is size L fit my head like a glove. It fit around my head instead of just on top and it felt very secure. It could definitely be lighter… the Synthe was noticeably lighter.Again, I dont like how it looks, it gives your head that mushroom look. I only plan to use this for specific events as when I ride alone I’d prefer not to wear one. It fits and I dont feel like trying more helmets.
rpm –
I have a long, oval head, so I got the XL size. Fit perfectly, but the plastic MIPS strap along the sides rested where my ears meet my head. Otherwise would have been perfect. p.s. – my wife has a medium Giro Aether model and the MIPS straps are inside the sides and far above her ears.
White Crane –
Purchased the Agilis in 2020. It got me through an accident this year, but it does have to be replaced since it struck the ground.Decided to go with the Syntax this time. I do like the look a bit better. Both are great options.
S. Worden –
Apparently, there is a difference between an Adult Medium and a Women’s Medium – online shopping learning curve? My first GIRO was a SAGA in a women’s medium. While it fit, it always felt like it was sitting on top of my head (lol, where it’s supposed to go!) what I mean is that it felt like it wasn’t deep enough β like I was a character in Super Mario Brothers and had a mushroom cap on my head. The Syntax is deeper, it sits lower on my head, and is a much more comfortable fit. Plus the vent holes are such that I can place my sunglass on my helmet and not worry about them falling off. I’m pretty sure all the helmets are going to save my life, so comfort and vanity are the next most important things!
Ahmet Sinan –
Overall Product quality is quite good. Suggested. My head is round and size is around 56 cm. Product fits even wearing a bike cap. Better quality harness can contribute product comfort.
N. Stuber –
Helmet is light weight, cool, and comfortable. There isa lots of adjustment to make it fit well.
concha M Candell –
Really confortable, just great!
Safia Cannon –
Rated one of the safest helmets in a study by U of Virginia, and it feels stylish! Barely notice it when I’m riding, and of 5 helmets I tried, this one was my favorite!