Phase Series: Moisture wicking base layer for interval activities. AR: All Around. Provides high performance & weather protection and highlights a range of features to give All Around versatility in multiple activities. Mid-weight base layer bottom appropriate for cooler temperatures and high-output activities. Hybrid mapping of Phasic(TM) AR (in the body) and Phasic(TM) SL (in the panels) fabrics in addition to the flatlock construction and comfortable next-to-skin fit eliminates excess bulk and rapidly transfers moisture for efficient evaporation. Benefits include improved temperature regulation and layering. Features: Moisture-wicking Breathable Durable Quick-drying Minimal odour retention Odour-control fabric treatment Hydrophobic materials will not absorb water Mechanical stretch textile for unrestricted mobility Anatomical shaping for fit and comfort Gusseted crotch Comfort waistband with laminated, soft-brushed finish Non-chafing label Next-to-skin Fit Weight: 120 g / 4.2 oz Activity: All Round Materials: Phasic(TM) SL-70% polyester, 30% polypropylene, UPF 25, 98 g/m . Reduced yarn size of polypropylene lends soft touch to 100% hydrophobic jersey knit textile with mechanical stretch. Composed of multidimensional polyester yarns that wick moisture laterally to dry quickly, plus polypropylene yarns that have silver-ion encapsulated into the fibre for long-lasting odour control. Very light weight with a smooth outer face that slides easily under other layers. Phasic(TM) AR-87% polyester, 13% polypropylene, UPF 50+, 145 g/m . Double knit textile with mechanical stretch composed of multi-dimensional polyester yarns that wick moisture laterally to dry quickly, plus polypropylene yarns that have silver-ion encapsulated into the fibre for long-lasting odour control. The smooth outer face is durably pill resistant and a lightly lofted interior adds light insulation.