Vintage NIKE t shirt. Heavy weight cotton/poly blend. Fleece lined (between t shirt and sweatshirt thickness)
Color is between a navy blue and a deep purple. 

Men's tag size XL but see measurements for best fit. 

PREOWNED - WASH FADE - SEE PICS

Measurements: 
26 inches pit to pit
28 inches collar base to bottom
33 inches collar to end of sleeve