A lightweight base layer Is essential for early season to help stabilize body temperature as the day warms up and cools down. The ScentBlocker 8th Layer Long Sleeve Shirt L Realtree Xtra is the ideal choice for next-to-skin performance with cool, light anti-microbial for ultra versatility alone or as a base layer. Advanced antimicrobial fabric technology reduces growth of odor-causing bacteria. This shirt is lightweight 100% polyester jersey with a crewneck style. There are thumbholes for easy layering.