Great helmet that looks good to
9/10 would recommend. The helmet fits really nicely, and the custom fit pads helped a lot to fine tune the helmet for me head. Not only is this a certified helmet, but it looks good on your head. I have a big head and helmets usually make me look like a mushroom, but the S1 fits low on my head and doesn't add too much bulk. The only negative is the size of the ear cutouts. They are a little small, and I can sometimes feel them touching the top of my ears. But, I have big ears so your mileage may vary, Great helmet!!
Is as good as it advertised
So I got the S1 Lifer Helmet - Bright Green Matte and I must say I feel very confident that it will protect me, the hard foam is incredibly hard, to the point that it makes other helmets look like wearing bubble wrap on your head. My only issue with the helmet is it isn't exactly clear on how to make it fit you with the custom pads that come with it. I have a larger head so I assumed putting a larger one in would be good for me but I found that it made the fit harder and the smaller pads worked the best. Just mess with it till you find which one fits.
other than that, it's a great product!