Wore this on a 90-degree climb and never felt that sticky, soaked-through feeling. The fabric dries fast and the airflow under the arms actually works.
Scarlett K.★★★★★
Wore this on a three-hour climb in 30°C heat and the stretch fabric never once felt sticky against my back. The ventilation panels actually let air through, which I didn't expect from a long sleeve. It's become my default hiking shirt this summer.
Emily★★★★☆
The stretch fabric really moves with you on scrambles, and the sleeves roll up and stay put when the afternoon heats up. Only gripe is the fit runs a bit loose through the waist, so I'd size down if you want it closer to the body.