The Revelation's key feature is Gore-Tex's Pro three-layer membrane. It's literally windproof and virtually waterproof, but still strikes a balance between elemental protection and breathability. The seams are taped (8 millimeters), the hand pockets and side and forearm vents feature watertight zippers.
As the name suggests, the Free Aero Race Shorts are designed to cheat the wind, reducing power output requirements by a claimed 10 watts at 50 kilometers an hour. The secret to these gains lies in how the shorts manage airflow across their multiple boundaries and textures — most obviously via the dimpling across the shorts' outer plane.
The seat and front of the shorts both feature fabrics designed for durability and cooling breathability, respectively, and the entire body is 30% Lycra for a fit that strikes a balance between compression and unrestrictive movement. Castelli also included highly reflective details on the back of the grippers for extra safety.
The Castelli Free Aero Race bib shorts feature a new softer surface fabric on the updated Progetto X2 Air seatpad. The innovative double V construction on the front keeps everything in place without compressing your stomach.
The new Giro Air has the same perfectly flat, stay-in-place grip, but with less mass, which no doubt contributes to the claimed overall weight loss of 17 grams and definitely reduces the aerodynamic footprint.
The Alpha Jacket's thermal layer is detached from the Windstopper layer in the front, so — unlike with other winter jackets — when you unzip the shell to let in the wind, you're only exposing the thermal layer, not your bare chest or base layer.
The knees, which tend to lead your legs into whatever weather that winter has cooked up, are given an additional layer of Topazio fabric, which is windproof, waterproof, and adds a considerable element of insulation.