Merino is well known for its breathability, comfort and antimicrobial properties. This 200-gram weight performance base layer will prove to be your new best friend. A functioning fly, anti-chafe flatlock seams, no center back seam, and a brushed elastic waistband ensure your base layers will be the last thing on your mind as you locate your next covey or spend the day chasing steelhead. In black. 100% merino wool. Washable. Imported.