Cool weather comfort day after daythe men39s 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 flatlock seams and a brushed waistband eliminate chaffing and because merino resists odour naturally they are ideal for multi day adventures why icebreaker