BODYFIT260 This is the warmest performance underwear in the world. After two weeks of keeping you snug, it still won’t hold odor or lose its shape. It is the ultimate base layer when layering and works brilliantly on its own.

There's a reason that Icebreaker's Bodyfit 260 Long Sleeve is a best-selling classic year after year. The 200 weight 100% Pure Merino is light enough to be worn alone on long haul runs or during fluid full day climbing ascents. But it's equally adept as a heavier baselayer in colder conditions. With a close to body fit, the Icebreaker Bodyfit 260 Crew is a long sleeve dream shirt for any man.

A zip neck collar, thumb loops, a dropped tail and raglan sleeves are among the cool features on the Tech Top, one of Icebreaker's most popular garments. It breathes brilliantly, feels soft against your skin and stubbornly refuses to hold odor.

The Icebreaker Men's Tech Top longsleeve is a 1/4 zip neck, 260 weight Merino wool pullover designed with the active user in mind. Wear it as a warm base layer or use it for cold morning runs. The Men's Tech Top features a drop-tail hem in back, 2 thumbloops and fits close to the body.

Weather deteriorating fast and the pitch ahead looking dubious? You can at least take solace in the warmth of this zip-neck.

A rugged fleece with chiseled good looks, Patagonia's Better Sweater 1/4-Zip Fleece Pullover for Men works well under a shell on the mountain and impresses the in-laws at dinner. Low in bulk and high in warmth and charm, the Better Sweater 1/4-Zip aims to please with its soft fleece interior and moisture wicking attributes that make it at home inside or outside.

The North Face Venture Men's Jacket is the best deal on the market today for anyone looking for an entry level outer shell to keep the rain off.

The Patagonia Torrentshell Men's Rain Jacket is the perfect choice for drenching conditions. Providing 2.5 layers of waterproof/breathable of protection from the elements, the Patagonia Torrentshell Men's Rain Jacket is lightweight and extremely durable. Tired of a leaky rain jacket? The Patagonia Torrentshell is a solid choice. Features a laminated visor on the hood and pit zips for ventilation.

The Icebreaker Men's 260 Crewe is a great do-everything piece. Featuring all the best properties of Merino Wool, the Men's 260 Crewe is odor resistant, fast drying and has a great next-to-skin feel - that's right NO ITCH. A close fit and non-chaffing flatlock stiching make this a great winter travel piece. Fits close to the body.