NRS H2Core Expedition LS Shirt - Men's 3% spandex Paddler-specific design allows unrestricted freedom of movement and puts seams where they won't cause irritation Micro-fleece filaments efficiently wick moisture away from the skin, and the durable, smooth exterior resists pilling and abrasion Convenient volcano-style cuffs ensure comfort with dry top and drysuit gaskets H2Core Lightweight fabric under the arms creates friction-free zones for comfortable paddling while improving ventilation where you need it most Semi-form fit for athletic comfort and easy layering over the top