Lightweight skirt with mesh inner-brief for excellent comfort The new Alpine Pro 2in1 Skirt is a light, comfortable trail running skirt with an integrated mesh liner for ideal comfort on mountain runs of all kinds. The skirt features a gel/flask pocket; an adjustable, stretch waist; and a smartphone pocket. The premium fabric feels super nice next to skin. Plus, it lends high breathability and ventilation even on demanding runs. Flat seams are another plus. Reflective stripes increase visibility of runners on trails or in unfavorable weather conditions and the dark.