Here's a vintage Grateful Dead baseball tee dated 1998. Front logo reads 'have a grateful day' with dancing bears around a round tie-dye printed central motif, more rainbow dancing bears on a Haight Ashbury sign. Poly cotton blend knit fabric. This Dead t-shirt has a crew neck and 3/4 sleeves.
 
Pre-owned, used; sold AS IS because of some red stains on the front, some pilling and a stain on the sleeve. Washed and soaked to try to remove the stain with no luck :-/
 
Marked as a size M or medium- please read the actual tee measurements given next-
Pit to pit- 19 1/2" across between the underarm seams
Center front length- 27"