With the Columbia Lhotse II Interchange Jacket for Men, you have options beyond what a traditional jacket can offer. The outer shell is your perfect rain gear when you need waterproof protection, and the inner jacket is great for crisp, chilly mornings on the trail. When the temperatures start really dropping, zip the two together to create an insulated, waterproof, all-mountain jacket that's fully seam-sealed. The Omni-Heat reflective lining reflects back your own body heat to keep you warmer, and advanced Omni-Tech technology gives you breathable, waterproof properties. Filled with Microtemp XF II insulation, you'll stay plenty warm in the coldest weather, and the underarm ventilation lets you get much needed venting when necessary. A removable, adjustable storm hood, drawcord adjustable hem, and adjustable cuffs help you seal out the cold, inclement weather, and the drop tail gives you extra coverage where you need it. An interior security pocket lets you stash your essentials safely and close at hand.