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Essential weather protection for running and more, made so minimal you'll barely feel it. Slightly Fitted. Best with lightweight layer. 100% cotton. Machine wash and dry. This is the layer to keep you fast on your feet without sacrificing protection from the elements. About the weight of two energy bars. Specially treated to block wind and repel water while it freely releases excess heat and moisture. Stretches as you move. It stows into its own small pouch and fits in your pocket. Full zip. Elasticized arm openings and hem. Two hand pockets with reflective detailing. Imported.