What Our Gearhead(R) Experts Are Saying:"I wore the Blockhaus Jersey on a long day with some serious elevation, and the Strada micromesh kept airflow moving the whole time. The fit is clean without being restrictive, and the full-length zipper made it easy to manage temperature on the descents. Three rear pockets held everything I needed without pulling on the fabric."The road kicks up, and the group strings out, and that is exactly the moment the Blockhaus Short-Sleeve Jersey was made for. Castelli built this jersey around Strada micromesh, a ventilated stretch fabric that keeps moisture moving away from the skin and airflow circulating through the back and chest during the kind of sustained effort that separates a good climb from a great one. The clean regular fit sits close without restricting hip flexion or shoulder rotation, so nothing gets in the way when the gradient demands everything. Raw-cut sleeve endings eliminate any binding at the arm, a small detail that becomes a noticeable comfort advantage over long hours. A full-length YKK Vislon zipper opens and closes smoothly for fast temperature control on rolling terrain, and a silicone gripper at the waist keeps the jersey anchored without riding up on hard efforts. Three rear pockets carry enough nutrition, kit, and storage for a full-day ride without creating drag or shift under load.