I haven't had a chance to test this item for its intended purpose and hope I never do. Should that event happen, though, I'm very comforted to know that this helmet actually fits my head. I've always had issues with helmets as I have a long oval head shape. Most helmets are either too wide with lots of side-to-side play or don't properly sit on my head. I was pleased to find the Z1 MIPS as the fit is almost perfect and the style looks great.
One thing to note which is super-important:
If you can't get the retention strap to tighten enough then turn the helmet over and pull back the MIPS liner where the retention mechanism attaches to the center back of the helmet. You will find a single silver screw that attaches the retention harness to a plastic strap that attaches to the helmet itself. On mine there's a sticker that points out this location, but I know it's not present on all of them. Loosen that screw and you can slide the retention harness so that it sits lower on your head. On mine I slid it out as far as it would go (don't forget to re-tighten the screw) and now I can tighten the harness down more than enough.
I have had this helmet now for about 2 months. I like it very much, it is light and well ventilated as advertised. The only negative is the sizing. I measured my head circumference about 6 times, and came within a few millimeters of 59 cm each time. Given that, I ordered a L, (58-61 cm). It is way to big, and I should have ordered a medium (not available at the time, as wasn't the M/L), as it projects about 2" (5cm) behind my actual head. . Fortunately, the Rollsys fit system snugs it down fine. Must look a bit weird to my riding buddies, but it works ok.
Just returned from a bike trip to N. Cascades in Washington. Wore this helmet in high heat 90s for 40-50miles a day. It goes on/off easy, is light weight, and the spin wheel on top of helmet rather than rear is quite nice. I wear a ponytail and no problem with fit. One caveat: i measure at 55cm so ordered a medium (which starts at 55cm). This was way too large, could not tighten it enough and had to exchange for a small which is perfect. I think if you have a very round head the bigger size might be needed but my head is more oval. P.S. exchange was super easy, no need to fill any paperwork, quick email and they sent me a fed ex label. Very pleased with this company.
Top safety rating per the Virginia Tech protocol.
Super comfortable and ventilated and high viz color.
Only downside is lack of forehead sun protection due to the large vents.
This is the lightest, best ventilated, and most slippery (aero) helmet I've ever owned. My last few helmets were Giro Aeon models which are light, but this 'feels' even lighter. On hot summer days I notice my heads is not as hot with the Lazer G1 as it was with the Aeon. It really has a nice air flow...whether on the hoods or head down in the drops. I am getting used to the location of the retention device. It is simple enough for me. Tighten once, loosen at the end of a ride. For me there have been no problems with it loosening on its own during a ride. The straps, buckles and other components are much better than my Aeon. Because of the unique retention system, I suspect my wife will want one since it seems pony tail friendly. 5-stars for far.
It's not cheap, but many high end helmets aren't these days. I returned a POC Ventral helmet due to it's round head profile while I'm more an oval. This G1, and the halo adjustment fits me much more comfortably, and has the added bonus of being the best tested road helmet by the Virginia Tech Helmet Ratings.
It's relatively light, and does a decent job at floating on the head as opposed to feeling like it's molded to it. I've done many a 3+ hour ride with it so far, and have not had any pressure points, hot spots or anything. It has been relatively cool as the temps have started to climb, but I've only had it for the last month and a half so it hasn't seen a proper summer yet. The only thing I have found to be of any annoyance is that my hair tends to get caught up in the mips layer at the front and pulls a little when removing the helmet at the end of the ride. Other than that, I have nothing remotely bad to say.
I wanted to like this helmet... I wanted to love this helmet... adorned on pro riders it looks cool, it gets great safety ratings, and it's the flagship offering from a legendary brand, so it has to be good, right? Well...it has what I consider to be a really protruding "bill" on the front of the helmet--it really sticks out there compared to the low-profile front-end of my Lazer Z1. A few others have pointed this out as well. So really nice helmet but aesthetically, just not my thing.
It was time to replace my old road helmet and after some careful research on safety, weight and fitting - this Lazer G1 is everything I was looking for. Love the fit and keeps my head cooler on hotter days. For winter I plan on ordering the Aeroshell to cover the vents. Most of my rides are 40 - 65+ miles 3 times a week and this is by far the most comfortable helmet I have ever worn. A bit pricey, however in this case you really get what you pay for!
A brief history of my helmet wearing: I'd always worn Giro helmets up until six or seven years ago when they first introduced their MIPS helmet. Sadly, that bad boy didn't fit at all as the M was too large and loose and the S was too small and tight. I then changed to a Kask Vertigo in a M but it was actually too large, was insufficiently well-ventilated, and sweat ran into my eyes. So then I moved to the Kask Protone in a size S. I loved Protone's aesthetics but, man, talk about poorly ventilated. Sheesh! So, onto the Lazer, which is simply AWESOME! Super lightweight, uber adjustable, and the best ventilated helmet I have EVER worn. Seriously, it had been so long since I'd worn a truly well-ventilated lid, that I'd actually forgotten how pleasant it is not to have sweat dripping into your eyes. This has become, now, my favorite helmet ever.
OK, watching the Jumbo Visma and Sunweb teams don this helmet may have heightened my interest, but I'd been looking to replace my Giro Synthe (non-MIPS) for a while anyway. Helmets are like shoes, great if they fit, lousy if they don't. The Lazer GP1 MIPS fits great - for me. It clears the top of my sunglasses by about 3/4", allowing for great ventilation (as opposed to the Giro, which sat on top of the sunglass frame). It does require adjusting the Rolsys device and sliding the non-locking strap yokes into place before each ride - a two second process that yields a stable, dialed-in fit. The straps are very light, easy to adjust to perfection and lay flat. The helmet is very well ventilated and very light. My medium weighs 260 grams - just 12 grams more than my very light, medium (non-MIPS) Giro Synthe. Price is very competitive with other top of the line helmets. And, it's a sleek, great looking lid.
I had to buy a new helmet after smashing my Giro Synthe on the right side twice. I was going to go with the Giro Aether, but then read the tests from Virginia Tech ( https://www.helmet.beam.vt.edu/bicycle-helmet-ratings.html ) where it is the top helmet out of 99 tested for concussion prevention (several places ahead of Giros). It also had really good reviews on YouTube.
Had my first ride in it today and it just blows the Synthe (non MIPS) away in terms of ventilation. That's really important to me. It fit really well and looks pretty good. So I'm very happy. The only one nitpick is the tightening system feels like it loosens too easily (no ratchet).
I can tell it sticks out a bit from my head, but I don't mind too much since that means more impact to the helmet and not my face. It is also super light and looks pretty cool (you can actually peel off the Lazer stickers if you want).
Anyway, I'm very picky and I am pleased with it! The Virgina Tech tests were really its best selling point for me.
Lightweight (you forget it's there), doesn't block your vision so you can keep your head down more and still see without craning your neck, good range of adjustability so you can ride with headbands, etc. or without and it'll fit regardless, and it vents really well to keep air flowing on hot days. Only issue I have is that it doesn't have vents that are good for holding sunglasses. I've just started putting them behind my head under the helmet instead and that works too. This thing is by far my favorite helmet that I've tried.
We also use intercoms on our tandem, so a lightweight helmet is very nice. Lazer definitely cuts some frill to make this helmet so light and the only complaint we have is the buckle is a bit hard to operate.
If light is high on your list, this helmet is a great deal.
Love the orange color!
It is a nice, light helmet. The MIPS feature is a plus. The back head cradle retention system does loosen. I have noticed this in other Lazer helmets too. I find myself having to tighten it often during a ride.
This would be my third Lazer helmet. Had a Z1 that saved my head from a heavy crash, and a Z1 Shimano limited edition that l also love. The G1 MIPS is lighter, better ventilation, more comfy and looks amazing. Also have the clear shield that goes over the G1/Z1helmet for Winter time to keep my head warm. Got the White G1 so l can match it with any of my jersey. Very happy with the purchase!
Lightness is evident immediately, and the ventilation is exceptional. Top of the skull tightening barrel takes some getting used to, but is effective. Usual chin strap problems with permanent sizing (no different from other helmets).
Excellent helmet all around. A bit pricey, but listed as the 'best protection' in several studies.