The Castelli Arrivo thermo skully proves that sometimes less is more – the simple but ingenious Arrivo made from thin but windproof and warm Thermoflex fabric provides moisture management to stop you from overheating and getting sweaty & uncomfortable. Raw-cut edges prevent unwanted pressure points and ensure there is no interference with helmet straps. Fitting neatly under your helmet the Arrivo means you’ll keep your head and ears warm while staying safe too.
Warm, soft & stretchy Thermoflex fabric
Raw-cut edge lies flat and doesn’t bunch up under your helmet
Very light and warm will cover all your needs till 5 C under a helmet...it has some good wind breaking properties too ....
Outstanding bit of kit. Very impressed with the warmth and feel of this hat considering the light weight and minimal bulk. I've bought many items that promise similar standards, but they aren't always fulfilled. However this is more than enough for winter rides and commutes. Lovely quality feel and fit. Definitely recommended.
Excellent product kept me warm on a very cold ride and has usual Castelli quality and a comfortable fit under my helmet.
Lovely light hat to fit under helmet and ideal to leave on your head for those coffee stops, thin material so non bulky
Warm and snug. Very comfortable under a helmet. A great low volume close fitting thermal hat.
Nice fit, comfortable and also wicks sweat away from forehead, a nice feature
Extemelly warm doesn't breath that much, great fit under the helmet
Great fit, minimal seams, with a nice brushed interior finish and crisp laser cut edges. Minimal bulk beneath the helmet. Elastic enough to prevent bunching and bulk. Great price, worth getting two at the price.
A warm and stylish skull cap that is light and thin for under the helmet but still provides plenty of warmth