Castelli’s Cubi long-sleeve jersey is designed for cooler days on the bike, and recommended for a temperature range of 12°C to 18°C / 54°C to 64°F.
The Cubi is Castelli’s pro-level take on the winter long-sleeve jersey and its ‘Warmer’ fabric is a modern incarnation of the classic Roubaix, being a tightly woven outer-layered polyester with a brushed-fleece lining. It’s the ideal fabric worn alone or beneath a shell, depending on temperature.
The main torso’s fabric is thick, while the flanks use twin panels of a lighter-fleece, high-stretch material called X-Stretch, for warmth and manoeuvrability.
This makes for a great fit, with the waist’s gripper elastic keeping everything in place; that said, this being Castelli’s pro cut, I’d suggest you size up from your usual.
The fabric is superb at wicking sweat from you, albeit it’s absorbent when caught in a stiff shower.
It has three rear pockets and the YKK zipper is weatherproof, but it lacks a wind flap on the back, or a garage at the collar.
My green colourway version also lacks reflectivity, though there is a hi-vis fluro alternative.
Overall, the Cubi jersey’s a solid option for colder days.