The Mons Royale Monsie One-Piece Baselayer removes all gaps so you'll be so warm and comfortable, you won't want to take it off all winter. Its soft Merino wool construction wicks moisture and naturally repels odors so you can stay fresh and warm through several days of wear. Its full-length zipper offers venting when you're blasting through deep powder and the full-width rear zipper makes it easy to take care of business when nature calls and you're deep in the backcountry. With its integrated hood and thumbholes, you'll be totally covered from the elements in a cocoon of warmth and comfort.