Mens Lightweight Base Layer Bottoms

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From morning's first frosty steps to midday sweat and exhilaration, the men's REI Co-op lightweight base layer bottoms wick and breathe to keep you comfortable all the way. Made of a soft, snag-resistant polyester blend that wicks sweat and dries fast to keep you warm in winter and cool as the season turns to spring Spandex in the fabric provides 4-way stretch for ease of movement Flatseam construction and low-profile waistband and crotch gusset keep you comfortable as you move UPF 50+ sun protection Fly opening Ankle-length inseam Semifitted Show more