It's probably large or extra large. Measures 24 from armpit to armpit and about 25 inches from collar to waist.
The shirt is well worn, faded and a little frayed, with a couple of holes and some loose stitching, but it's still wearable and looks very cool. The item "Vintage Grateful Dead Tie Dye 1992 T-shirt Lithuania Basketball Size Large or XL" is in sale since Sunday, September 13, 2020. This item is in the category "Clothing, Shoes & Accessories\Men\Men's Clothing\Shirts\T-Shirts".
The seller is "flashlightbooks14" and is located in San Antonio, Texas. This item can be shipped to United States, Canada, United Kingdom, Australia, Ireland, Singapore, Malaysia.