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As Castelli’s Aero Race 5.1 Jersey reigns “King Aerodynamics,” the 4.1 model takes the cake on overall comfort and versatility. Still very solid in the aerodynamic department, the Free AR 4.1 also offers a perfect fit with exception moisture management through its Velocity fabric on the front and shoulders. The silicone gripper elastic at the waist ensures the 4.1 remains anchored in place, while the Nervato fabric at the arms sits flat to the bicep for an aerodynamic fit. Though the Free AR 4.1 may not be a skin suit, it can save approximately 12 watts at 40 km/h compared to a normal race-fit jersey, making a perfect piece to dawn at the next criterium or road race.
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1. On the bike, your Castelli jersey should
fit close to the skin.
2. Off the bike, your Castelli jersey might
feel tight across the chest and a little
short in front.
3. Castelli ProSecco treatment helps
perspiration evaporate quickly to keep
you cooler and drier.
4. Castelli jerseys are designed with the
sleeves articulated forward for maximum
5. Bibshorts should fit tightly enough
to support critical leg muscles through
compression without inhibiting
movement and constricting blood flow.