The La Sportiva Aequilibrium Thermal Hoodie was developed with input from alpine guides, built around what moving fast at altitude actually demands. Polartec(R) Power Grid(TM) fabric insulates without trapping heat and dries quickly once the effort lets up, so the layer keeps working through changing pace instead of overheating on the way up. A helmet-compatible hood with an integrated visor and secure elastic opening seals out wind, while underarm mesh inserts and abrasion-resistant shoulder paneling handle both the heat and the wear that come with real technical movement. What Our Gearhead(R) Experts Are Saying:"I climbed pitch after pitch without ever needing to stop and adjust layers, the fabric just kept pace with how hard I was working. That's the difference between a mid-layer built for standing around and one built for actually moving."