POLO Ralph Lauren Men’s Tshirt

POLO Ralph Lauren Men’s T-shirt Size L 100% Cotton V-neck pull on There is a spot on the back of the shirt that is lighter. It does not come out with wash. I don’t know if it’s the fabric or an actual spot ( SEE PIC ) Measured laying flat approx 24in armpit to armpit, 24.5in side to side at bottom of shirt and approx 27.5in from shoulder to bottom of T-shirt