When it's so cold your regular old baselayer top and bottoms just won't cut it, reach for the Rab Men's Power Stretch Pro Bib Baselayer. Stretchy, warm, and moisture-wicking, this one-piece Polartec fleece baselayer will keep you toasty on frigid winter pursuits like ice climbing, backcountry skiing, or mountaineering. The slim fit and flatlock seams ensure comfortable layering, while the large front zipper and rear seat zipper make getting dressed and taking bathroom breaks easy.