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Columbia Mens Midweight Stretch Base Layer Omni Heat Top Shirt (as1, Alpha, s, Regular, Regular, Standard, Grey, S) at Amazon Men's Clothing store
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Columbia Womens midweight Omni-Heat Long Sleeve T-Shirt Baselayer Blouse : Amazon.ca: Clothing, Shoes & Accessories
![Summit County gear review: Base layers from Columbia, The North Face and Pearl Izumi | SummitDaily.com Summit County gear review: Base layers from Columbia, The North Face and Pearl Izumi | SummitDaily.com](https://cdn.summitdaily.com/wp-content/uploads/sites/2/2016/08/Highgear-sdn-012614-Northface.jpg)
Summit County gear review: Base layers from Columbia, The North Face and Pearl Izumi | SummitDaily.com
![Columbia Mens Midweight Stretch Base Layer Omni Heat Top Shirt (as1, Alpha, s, Regular, Regular, Standard, Grey, S) at Amazon Men's Clothing store Columbia Mens Midweight Stretch Base Layer Omni Heat Top Shirt (as1, Alpha, s, Regular, Regular, Standard, Grey, S) at Amazon Men's Clothing store](https://m.media-amazon.com/images/I/81vF+1fW9uL._AC_SX679_.jpg)