This REI Men's Medium Long Sleeve Lightweight Base Layer Shirt in Blue Stretch is perfect for outdoor activities like hiking, running, and biking. Made from a blend of polyester and spandex, it offers mild compression and moisture-wicking properties, making it ideal for all seasons. The shirt features a mock neck and pullover closure, and is machine washable for easy care. With a solid pattern and a focus on outdoor sports themes, this shirt is both functional and stylish for various occasions.
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