The G1 mips M weighs a few grams more than my Giro Synthe mips M. I really like the styling, its lower profile in height and width than my Synthe. Weight wise, I was disappointed the Lazer is slightly heavier. Im on the verge of being to big for the med size of most helmets, and the G1 feels a hair slightly larger than the Synthe. The retention device on the G1 with the roller on top tightens down moderately tight before it gives up and skips. The Synthe mechanism squeezes headache tight if one desires, and overall the G1 retention does not seem to really help hold the helmet on my head. The G1 doesnt grab my head like the Synthe does, but that may just be the shape of my head. I find the helmet can wander high on my forehead. Your mileage may vary. Also, the Y- strap brackets on the sides of the straps (on either side of your jaw) dont stay where you adjust them to be which is annoying. They can be easily moved by casual handling. Beyond these annoyances, the helmet is comfortable, and looks nice and well made. Just wish it were a bit lighter as they tout the light weight, and the straps were a bit more secure.
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.