The Sonic Ultra is the ultimate mountain running tee for when temperatures climb and intensity peaks, bringing a weightless, airy feel to every step. Built with our rapid-drying, fast-wicking Dryflo™ Air fabric with airflow technology and additional vent holes, it’s crafted to keep you cool, fresh, and sweat-free on steep inclines and technical trails. Ultralight and slim-fitting, it’s optimised for efficient movement and won’t hold you back in mountain races or on blustery ascents. Highly breathable, adaptable, and responsive to your output, it’s ideal on its own for running in the heat, or for layering over as you climb to higher altitudes and exposed terrain.

• Lightweight, wicking Dryflo™ Air fabric offers rapid drying and maximum airflow to keep you cool and sweat-free.
• Stays fresh over multiple days with an odour control treatment.
• Additional ventilation thanks to laser-cut holes under the arms and on the back of your neck.
• The strong microactive seams are comfortable next to your skin, with a seam-free outer sleeve edge to reduce rubbing.
• Designed for movement, with a split hem giving extra mobility.
• Set-in sleeves.
• Reflective branding.