Castelli's Risvolto Winter Cap provides enough warmth for most winter conditions and comes with a stowable flap to cover your ears and the back of your head.
You can just about wear it under a helmet but you're making life hard for yourself there because it's not especially low profile. No, this is a hat that's aimed at those who ride without a lid.
The Risvolto is made from Castelli's Warmer fabric which is a stretchy, fleece-backed polyester. It's not windproof but it provides a good amount of insulation. It's also very breathable and a towelling liner helps wick sweat away from your head so you don't get all sticky at the first hint of a hill.
The flap is double-thickness fabric and you can fold it up – inside or out – to adjust the temperature. It makes a surprising amount of difference, believe it or not.
Castelli reckon the Risvolto has a temperature range of 6-14°C. They're having a laugh. If you wear this on the bike when the temperature is 14°C, you will poach your brain. 6°, maybe at a push, although I'd say you want to use it at cooler temperatures than that, even, unless you're on the very steadiest of steady rides.
One size fits all, by the way – and there's plenty of stretch in the fabrics so most people will get a comfortable fit. As well as red, the Risvolto is available in black with either a white or red stripe.
Insulating, breathable winter cap that'll keep your ears nice 'n' toasty
road.cc test report
Make and model: Castelli Risvolto Winter Cap
Size tested: Red, unisize
Tell us what the product is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
Castelli say, "Mother knows best. Remember when your mother used to tell you, 'Wear your hat! You lose 90% of your heat through your head.' We still don't believe that 90% number, but we do believe that well-designed headwear is a must. This is a must for cold weather."
How do they know my mother? That's what I'd like to know.
Like most hats, it'll last yonks. There's nothing to rub or wear out. All it has to do is sit on your swede and go through the washing machine. It does both just fine.
We've had similar-ish hats on road.cc priced at about £25. Rapha do a Sportwool one for £35 and a cyclo cross one at £40, so £30 is there or thereabouts.
Tell us how the product performed overall when used for its designed purpose
It does exactly what it's supposed to do
Tell us what you particularly liked about the product
Warm ears; you can't put a price on that. Well, I say that... it's 30 quid in this case.
Did you enjoy using the product? Yes
Would you consider buying the product? I'm sticking with skullcaps because I virtually always wear a helmet
Would you recommend the product to a friend? Yup
About the tester
Age: 41 Height: 190cm Weight: 75kg
I usually ride: My best bike is:
I've been riding for: Over 20 years I ride: Most days I would class myself as: Expert
I regularly do the following types of riding: time trialling, commuting, club rides, sportives, general fitness riding,
Mat has worked for loads of bike magazines over 20+ years, and been editor of 220 Triathlon and Cycling Plus. He's been road.cc technical editor for eight years, testing bikes, fettling the latest kit, and trying out the most up-to-the-minute clothing. We send him off around the world to get all the news from launches and shows too. He has won his category in Ironman UK 70.3 and finished on the podium in both marathons he has run. Mat is a Cambridge graduate who did a post-grad in magazine journalism, and he is a past winner of the Cycling Media Award for Specialist Online Writer.