Excellent used condition. Gray. Extra Large. Phase Change Materials (derived from canola flowers) act as a thermal battery that adapts to the wearer’s environment and body temperature Brushed variants have a softer, fleecy hand feel Breathable open pique-knit design No-warp 3D collar 4-way stretch Moisture wicking Wrinkle resistant Solid: 54% Recycled TCD Polyester, 46% PCM-infused Polyester Oxford: 66% Recycled TCD Polyester, 34% PCM-infused Polyester Heather: 53% Recycled TCD Polyester, 47% PCM-infused Polyester Made by Good Trust in Busan, South Korea