Step up your indoor cycling sessions with Castelli's Insider Jersey, a technical marvel designed to optimise comfort, breathability, and moisture management. This garment offers the perfect blend of style and functionality, ensuring you stay cool and confident during intense workouts.

Built with the same dedication that makes Castelli the brand of choice for toughest summer mountain climbs, the Insider Jersey provides a superior level of performance tailored specifically for indoor training. Higher indoor temperatures and the lack of a natural breeze mean maximised body temperature management is crucial for enhanced performance and endurance, and this is where the Insider Jersey truly shines.

The jersey utilises a 3D mesh polyester fabric, famous for its ultra-lightweight nature and stellar moisture-wicking abilities. This fabric promotes quick drying, effectively lifting excessive moisture away from your skin, keeping you cooler and more comfortable even during intense workout sessions.

The design further aids temperature control with a short waist cut, low collar and full-length zip, promoting superior ventilation. Balancing perfectly between transparency and opacity, the jersey ensures a modest yet appealing look, perfect for group or individual training sessions. The addition of two rear pockets provides handy space for essentials like earphones or energy gels.

While the jersey is primarily designed for indoor training, its emphasis on breathability and cooling doesn't limit it to indoor use alone. Its aesthetic appeal and performance features make it an excellent choice for outdoor training during hot summer months.

Key Features:

• 3D mesh polyester fabric for ultimate moisture control and quick-drying
• Perfect balance between transparency and opacity for optimal airflow and appealing look
• Full-length zipper for easy wear and removal
• Two rear pockets for storing essentials
• Suitable for both indoor training and outdoor use during hot weather