The Arc'teryx Phase SL Crew Long Sleeve Top is the ideal lightweight layer during aerobic activities. A breathable base layer constructed using an odor-control fabric so you don't have to worry about B.O. after.
Mechanical stretch textile for unrestricted mobility—fabric is inherently stretchy without the use of Spandex fibres, making it more durable.
Phasic SL (70% polyester, 30% polypropylene)
Anatomical shaping for fit and comfort
Minimal odor retention
Hydrophobic materials will not absorb water.