CASTELLI Climber´s 3.1 Short Sleeve Jersey - Master the HeatExperience unparalleled comfort and performance when the temperature soars with the Castelli Climber´s 3.1 Short Sleeve Jersey. Part of the Official Equipments category, this jersey is the ultimate weapon against heat and gravity, designed for cyclists who demand excellence on the most challenging days.Created for the hottest days, this jersey allows ample airflow, is quick to dry and blocks more than 90% of UV rays on your back. A great choice for your long summer rides, or add a base layer and it´s a three-season jersey. Originally developed for the grueling demands of Grand Tour mountain stages, its primary purpose is to make you lighter and keep you cooler for epic climbs and sweltering summer conditions.The Climber´s 3.1 is a masterpiece of engineering and aerodynamic design. Through extensive computational fluid dynamics (CFD) analysis, every fabric panel and seam has been strategically placed to minimize drag and optimize airflow, helping you slice through the wind with greater efficiency. The result is a jersey that is not only incredibly lightweight but also aerodynamically fast.Performance is delivered through a combination of advanced, purpose-driven fabrics. The front and side panels feature Flusso 3D fabric, engineered for rapid cooling and a barely-there feel. For the back, StradaPro 3D fabric provides a structured yet open weave that promotes exceptional breathability, allowing heat and moisture to escape effortlessly. This focus on ventilation and moisture management ensures you stay dry and comfortable, enabling you to focus purely on your effort.Comfort is further enhanced by the seamless construction of the Air Mesh sleeves, which feature a raw-cut ending. This design eliminates restrictive cuffs, providing a smooth transition from fabric to skin for a modern, pro-level fit that feels custom-made. The full-length YKK® Vislon® zipper offers easy, one-handed ventilation control, allowing you to adapt instantly to changing temperatures and efforts.For practicality on long rides or during competition, the jersey is equipped with three robust rear pockets, perfectly positioned for easy access to nutrition and essentials. A standout feature for competitors is the integrated transparent number pocket on the back, a clever solution that removes the need to pin on race numbers, thereby protecting the delicate fabric and improving aerodynamics around the lower back.The Castelli Climber´s 3.1 is more than just a jersey, it´s a competitive advantage for any rider looking to conquer the heat and the road.Features:- CFD-based fabric placement and seam construction- Engineered rapid cooling, light weight and aero efficiency- Flusso 3D fabric on front and side panels- StradaPro 3D back for breathability- Air Mesh sleeves with raw-cut sleeve ending- YKK® Vislon® zipper- 3 rear pockets with integrated transparent number pocket on the back, removes the need to pin on race numbers and improves the aerodynamics around the lower backSpecifications:- Weight: 106 g (M)Rating:- Breathability: 5/5- Lightweight: 5/5Attributes: Jerseys, Men, Round, Short sleeve, Synthetic, Teams