Men's dress shirt.  Polyester 65%, cotton 35%.
Wing collar.   Button front.  Convertible cuffs (can be buttoned, or worn with cufflinks if you prefer).

Collar size (not marked in shirt, taken from measurements) 17 inches  
Actual garment measurements:
Chest 52" (maximum)
Shoulder to shoulder 20"
Length at the back 32"
Sleeve, shoulder to cuff 24.5"
Sleeve, armpit to cuff 21"

Condition:  Excellent condition (used).