I have a big head and finding a helmet that fits is a challenge. I’ve been using a Bell XLV XL size that has worked for me, but I was at the annual Seattle Bike Swap last weekend and found a used Bell Stoker model helmet for $20. It fits like a glove, no pressure points at all. It has good coverage in the rear and is rounded rather than having an “aerodynamic” tail sticking out; the side coverage is good as well. It has a wheel-style adjuster and excellent ventilation. I took it for a long ride yesterday and I think it’s a keeper. The only thing I would change is to have a white one for visibility and direct sun. The color on this one is “matte titanium”— that’s dark gray. The headlamp is an addition and discussed below.