*Valid through May. Limit 1 per order while supplies last. Not valid on digital-only orders.
Our one-of-a-kind "Decade Design," created over 30 years ago in honor of The Marine Mammal Center's 10th anniversary, remains our most popular design. Featuring the side profile of ten regal sea lions on a black crew-neck t-shirt, this classic is sure to draw compliments! Also available as a gray, fitted-cut t-shirt.
100% organic cotton.
Adult sizes: S-XXL
Love this design? Check out our other Decade Design products!