William Ellery Woolly is an ultralight mid layer, made of a breathable mesh fleece. The small hairs on the Woolly Bear Moth, and other insects, help to keep their body warm, and muscles limber. This Woolly helps to keep you warm, and your muscles limber for outdoor activities. The highly breathable mesh fleece allows perspiration to evaporate, providing optimal temperature regulation while active. This hand dyed Woolly reflects the pattern of the transitional soil in a camo we call Decompenflage. This is an experimental color. Each fleece is hand dyed and has a different pattern. Some are more near blonde, brown, yellow, or green. They are all the same camo, but none are identical. Test at your own risk. Tarantula Brown with Dark Green armpads Alpha Direct 120gsm Polyester Made in NYC, USA. How to stow Small: Pit to Pit: 20" Neck to Cuff: 33" Medium: Pit to Pit: 21" Neck to Cuff: 34" Large: Pit to Pit: 22" Neck to Cuff: 34" X Large: Pit to Pit: 23" Neck to Cuff: 35"