Light weight a Merino Wool cycling cap?
 

Anyone have a source for the above? Thinking that as Merino Wool does not smell after wearing that a cap would be a good idea.

walzcaps.com ?

OOH! I've got it! Pace makes an amazing one! I wear it every day.

What I like:

1) The brim is also merino, with no stiffener, so it crumples easily and is pocketable.
2) The tasteful red "P" is the only identifying factor that it's a Pace hat. nothing obnoxious.
3) It's lighter, more flexible, and fits better than a Walz cap.
4) It's durable. I've had mine for a year and it looks new. I wash it often.
5) It fits my larger-than-average head. Few cycling caps fit. This one is perfect. Yet, it fits my girlfriend Kelley's regular-sized-head fine. It's very, very stretchy and not at all constricting. On the contrary, it's less constricting than any other hat I've used.

Here's a product link to the company. I bet you can find it at your local shop, though.

Euro Wool Cap

Rarely does a question on this forum dovetal SO PERFECTLY with something I am absolutely 100% sure about. This hat, I am absolutely 100% sure about. I bet that this hat is better than the one you came here picturing in your head.

http://ecx.images-amazon.com/images/...L._SX1000_.jpg

I've got an old discontinued beanie from Ibex that is my go-to hat for 30-50F temperatures. Any colder than that and I'm not likely on the bike and any warmer would call for putting the hat away. Their current offerings look good.
Merino Wool Hats and Caps from Ibex Outdoor Clothing

I wish someone would make a nice Merino hat, with a full bill, like a baseball cap, to keep rain & snow off your glasses, and earflaps. My ears get cold quick, when it's down in the 30s F or colder, which is about half the point of wearing a hat. I have a wool skull cap (not sure if it's Merino or regular wool), that I wear under a baseball cap, but both together is too confining, and gets uncomfortable. I know I can't be the only one, these would probably sell like hotcakes.

I bought a nice Giro cycling cap made of wool off of Nashbar for $25, but usually less with their discounts (for example, 25% off today). I like the brim, the long back for folding up/down over the ears, and it fits under the helmet well.

Giro Seasonal Wool Cycling Cap

I should have mentioned I want it for Summer touring. The Pace one looks interesting. I have a HeadSweat one now but it retains odors.