Overall
Overall a great helmet cover. Its not my favorite style of hat, but that is totally personal preference. I think I just have a weird shaped head.
MattyB off of NS makes these things, so you also know you're supporting a fellow NSer when you buy one.
Performance
Performed great as a helmet cover. When I wore it as a normal hat it kept my head nice and warm too.
Design
Good style, and its well manufactured. You certianly feel like you've got a professionally made piece of gear, not just some kid making you a hat.
Fit
At first I wasn't about this style of hat. Something about the shape of my head made it stick up in a really weird way, and I wasn't sure what to do about it. However, then one day when I was hating having to wear a helmet, I thought wow, why don't I just pull this thing over it?
As a helmet cover, you can't beat this hat. Some people say I look like a mushroom, or a goomba from super mario, but hey I'm down. Gives a little flair to wearing a helmet.
Durability
Not a single problem with it, and it was pretty stretched out over my helmet. Didn't even stretch to an unusable amount, so if I take it off the helmet I can still wear it as a normal hat.