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With the Argon Long-Sleeve Top from Outdoor Research, we are kept dry, cool, and fresh as we spend the day hiking to a new summit. 83% of the top is made from recycled materials for eco-friendly construction while providing quick-drying, moisture-wicking, and breathable properties. Its flat-seam construction and raglan sleeves minimize chafing for all-day comfort, while the long sleeves with UPF 30 protect our skin from the sun's harmful rays.