Built for low activity in the extremely cold weather, the Under Armour ColdGear Base 4.0 Long-Sleeve Crew Top for Men is a great choice for late-season hunting from a tree stand or ice fishing without a shelter. Not only is it UA's warmest base layer to date, it features a unique fabric pattern that effectively traps and holds your body heat without adding bulk. The soft, brushed, micro-grid pattern of the interior holds thousands of warm air pockets to create a microclimate that's warm and comfortable in deep-winter conditions. 4-way-stretch construction offers a fitted, next-to-skin feel, and it allows unrestricted arm mobility. Built-in UA Scent Control helps reduce the human odors that might spook nearby game. Moisture-wicking performance pulls perspiration away from skin for quick evaporation and dry comfort. The Under Armour ColdGear men's thermal crew top is made of 78% polyester/22% elasterell athletic fabric. Imported. Manufacturer style #: 1353349. 78% polyester/22% elasterell athletic fabric Built for low activity in the extremely cold weather UA's warmest base layer to date Soft, brushed, micro-grid pattern 4-way-stretch construction UA Scent Control helps reduce human odors Moisture-wicking performance