Phase Series: Moisture wicking base layer for interval activities. SV: Severe Weather. Employs the most durable materials for prolonged use and provides the most weather protection in the harshest weather conditions. Arc teryx heaviest weight base layer bottom in the Phase(TM) family, appropriate for cooler temperatures and high output activities. Featuring comfortable anatomical shaping and mid-level insulation, these super-wicking base layer bottoms are ideal for cold days in the alpine. Engineered for superior moisture management and rapid dry-times during stop-and-go activities, these form-fitting pants keep the user drier and more comfortable. Hybrid construction of Phasic(TM) SV and Phasic(TM) AR fabrics in addition to the textile s construction and next-to-skin fit eliminates excess bulk and rapidly transfers moisture for efficient evaporation and improved temperature regulation and layering. Encapsulated silver-ion fibers provide durable and long-lasting odour control. Regular cut has 32 inseam. Features: Moisture-wicking Breathable Durable Quick-drying Minimal odour retention Antimicrobial, odour-control fabric treatment Hydrophobic materials will not absorb water Mechanical stretch textile for unrestricted mobility-fabric is inherently stretchy without the use of Spandex fibres, making it more durable Anatomical shaping for fit and comfort Gusseted crotch Non-chafing label Comfort waistband with laminated, soft-brushed finish 76 cm inseam Next-to-skin Fit Weight: 130 g / 4.6 oz Activity: All Round Materials: 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. Phasic(TM) SV-92% polyester, 8% polypropylene, UPF 50+, 150 g/m . Double 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. The interior fabric is a combination of polyester and polypropylene and slightly lofted for mid-level insulation, while the face is 100% polyester, smooth and durably pill resistant.