Icebreaker Merino Oasis Year-Round Base Layer Long Sleeve Crew Neck Shirt, New Zealand Merino Wool 100% Wool Made in USA or Imported SOFT & BREATHABLE: The merino jersey fabric of this crew neck tee is so great at regulating your temperature that you'll feel great in any weather. Because merino resists odor, you can wear it for a hike one day, a run the next, a bike ride the day after. BASE LAYERS: Designed to keep you comfortable in hot or cold weather, our odor resistant base layers include wool long underwear and long sleeve and short sleeve tops. Pair them with our mens fleece jackets and vests for an extra-warm layering system. TOP TO TOE LAYERING: Our clothes transcend single usage; we make multi-functional pieces that adapt to your life & style, on the mountain, in the city & at home. From wool socks, boxers & bikini briefs, to trench coats, windbreakers & fleece hoodies. SIMPLICITY & LONGEVITY: We want our clothing to be relevant for years. Through high quality performance, Icebreaker's merino wool base layers, first layers, mid layers, and outer layers will thrive in your wardrobe and your activities for many seasons. PREMIUM LAYERING: Try Icebreaker's merino wool under-base, base, mid, and top layers if you've used similar products from Woolrich, SmartWool, Marmot, Columbia, Carhartt, Hatley, The North Face, Helly Hansen, Levis, Ben Sherman, Browning, or Mack Weldon.