Thomas M. McCaffertywrote a review of POC Octal Raceday Helmet on April 13, 2018
Familiarity: I've used it several times
I have been using this helmet for about a month now and I really love it. It fits nicely and has a lot of coverage, especially on the back of the helmet behind the ears. It has more coverage there than any helmet I've ever owned. Great ventilation, with lots of large openings, especially in the rear of the helmet to let the air escape. I wore this helmet on a recent two day event where the temps started out cool and got really warm in the later stages of the ride. Worked great in both situations. The helmet, in my opinion, is really good looking, and IU have received several favorable comments on it. I really recommend the POC helmet. Great helmet at a great price from Backcountry. My only minor complaint is that there are adjustment arrows on the inside of the helmet that seem to allow you to reposition the rear retention system a little, but there are no instructions on how to do it, and no way of telling how much adjustment would be allowed. There are two numbers, (1 & 2), showing with back and forth arrows adjacent to the numbers, but I haven't been able to figure out how to make an adjustment. I also checked the POC website and YouTube with no luck. I ordered a size medium and it has a little room for size adjustment on the retention system. I wear a size 7 3/8 hat.