"The La Sportiva Aequilibrium Thermal Hoodie was developed with input from alpine guides, built around what moving fast at altitude actually demands. Polartec® Power Grid™ 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® 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."""