The Arcteryx Phase SL Zip Neck LS is a very lightweight baselayer that provides high levels of breathability and excellent wicking completed with a zip neck for maximum venting when working hard. Its low weight lends this fabric to summer mountain activity whether you're trekking or climbing and just need that little extra bit of warmth.
Phasic base layer fabric is a compiled from two different yarns. The first is a non absorbent Hydrophobic yarn which will shed water molecules pushing them onto the PHi yarn. Silver ions are encapsulated into the Hydrophobic fibres of the yarn which provide anti-microbial properties to help eliminate odour.
The second yarn is PHi, a multi dimensional yarn which wicks moisture laterally along the length of the yarn, effectively dispersing moisture evenly across the garment. Temperature regulation is improved as this dispersal eliminates cold spots. As you slow down or stop the fabric will dry quickly, as a result of the larger surface area the moisture is covering, this quick evaporation helps to retain body heat.
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