Price reduced! Outdoor Research Helium Jacket. This rain jacket uses Pertex Shield for waterproof and breathable performance. In my subjective opinion, there is no stickiness or delamination of the seam tape, which can be signs of hydrolysis. There are no noticeable tears or stains, and I think the condition is clean. Size: US S (Japan M) Width: 51cm Length: 68cm Gender: Men's Features: UL/Ultralight, Windproof, Water repellent, Waterproof, Breathable Size 1: S