Military Thermal Undershirt, ECWCS Level 1 Base Layer shirt

If a camping and hiking trip in the rugged mountains, or anywhere for that matter, doesn’t sound appealing, the Extended Cold Weather Clothing System (ECWCS) thermal undershirt will come to your rescue.  The next time that invitation comes your way, you can confidently accept because you know that you can just pull on your lightweight shirt to use as pajamas and you will stay toasty warm during a chilly night, yet cool when wearing it during that hike in the heat of the day. 

This Level 1 shirt was designed by the US military to help soldiers survive through any weather condition they encounter.  As the first level in the 7 level layering system, it is worn against the skin.  It can be worn by itself in a casual manner or under one or more of the other levels.  Because of the special durable construction of the fabric it not only provides insulation, it aides in the transfer of moisture (known as moisture wicking). 

What this means for you is that during that cold camping night, your light weight thermal will keep you insulated without the bulk.  And what about that hike in the heat of the day? The fabric in this shirt is highly breathable and fast drying.  This evaporative cooling system, again without the bulk, is moisture wicking and will, therefore, keep you cool when your hiking companions feel uncomfortable enough in their regular clothes to return to camp early.

This shirt is very durable, does not restrict movement and for added comfort and convenience has a long tail and thumb holes.  So go ahead and accept that invitation with confidence, just make sure to take along your ECWS Level 1 silk weight thermal shirt.

Level 1 base layer thermals pair very well with the level 2 thermal shirt and pants and the level 3 fleece jacket.