Big Bill 6.6 oz Polartec Power Grid Base Layer Shirt Level 2; Style: ECWCT2

ECWCT2 | SHIRT BASE LAYER LEVEL 2

MADE IN USA

• 6 OZ Polartex® PowerGrid® 93% Polyester/ 7% Spandex
• Wicking fabric that keeps you dry
• Relax fit
• Tagless
• Comfortable gridded fleece
• Thumb holes at cuffs

Size: (REG) S-3XL

Color: Green, Black

NOTE: BLK S - sold out! GRN M-L - sold out! 

According to Wikipedia (20-Feb-2017):

The Extended Cold Weather Clothing System (ECWCS) is a protective clothing system developed in the 1980s by the United States Army Natick Soldier Research, Development and Engineering Center, Natick, Massachusetts. The first generation ECWCS consisted of parka and trousers plus 20 other individual clothing, handwear, headwear and footwear items which are used in various combinations to meet the cold weather environmental requirements of the US military (and others). The Gen III ECWCS is designed to maintain adequate environmental protection in temperatures ranging between -60 and +40 Fahrenheit (about -51 and +4 Celsius).