The Sonic Ultra Zip is a highly efficient mountain running layer. Slim fitting, adaptable and built with unhindered articulation and an odour control finish. Designed to offer you a layer of protection on cooler days when a tee won’t cut it, or hotter days when covering up from the sun is key, it’s responsive to your output, eliminating the need to constantly change layers.
Highly responsive to your output, the Sonic Ultra Zip is cleverly designed to regulate your temperature. Built with ultralight Motiv™ Aero fabric, it is fast-drying, quick-wicking and highly breathable. With its subtle mesh structure, the fabric wicks moisture away from the skin keeping you dry on those steep, challenging climbs. It has laser cut vent holes in high heat areas, like the back of the neck and under the arms, and the deep chest zip is ideal for dumping heat quickly and keep the air flowing. Perfect for runners travelling far and fast, crossing contours, and weathering all conditions.
How to measure.
Chest: Measure the full circumference of your chest just below your armpits.
Waist: Find the top of your hip and measure the full circumference around your body.
Arm length: Measure horizontally from the centre of your back, across the shoulder, over a naturally bent elbow and down to the wrist fold.
While all our garments are sized to these measurements, you will find that the cut on jackets designed for use in more extreme environments will be slightly more generous in the expectation that these designs will be used with additional/thicker midlayers. If you plan on using a jacket like this with fewer layers beneath it, please keep this in mind when selecting your size.
All garments are designed and fitted to suit their intended end use. See below for a general description of our fit categories:
Regular: Neither slim nor loose. Regular fit items are the perfect balance of form fit and ease of movement.
Slim: A streamlined silhouette. Cut trim following the contours of the body. Expertly placed articulation of seams and the use of stretch fabric ensure maximum freedom of movement in these close-fitting items.
Relaxed: Our more generous fit. Cut loosely through the body allowing for ease of movement and additional layering.
Expedition: Designed specifically to accommodate the layering system and equipment required for high altitude and polar expeditions.
