The Icebreaker Men's Oasis Leggings with Fly make cool weather sports better, day after day. Crafted from ultra soft, breathable 200gm merino jersey, they provide enough warmth under a pant for really cold days in winter sports, but breathe well enough for morning runs in the fall or hiking high in the mountains. Features: Functioning fly, flatlock seams prevent chafing, no center back seam for layering and comfort, Icebreaker branded brushed elastic waistband. FABRIC WEIGHT: 200 Lightweight FABRIC: 100% Merino Wool