Brand: Cotton Deluxe by Anvil Knitwear. Item: Vintage Mountain Dew promotional long-sleeve mock neck shirt. Graphics: Front chest reads "Proud Member of the Dew Crew"; large back print "Mountain Dew Vertical Challenge 1998-99" ski resort scene; PATS PEAK printed down sleeve. Color: White with multicolor graphics and black sleeve text. Material: Pre-shrunk 100% cotton (per tag), medium-weight knit. Size on tag: XL (likely Mens fit). Made in U.S.A.; RN 38619; Anvil Knitwear, Inc., Mullins, SC. Details: Mock neck collar, ribbed cuffs, straight hem, long sleeves, classic 1990s soda advertising design.