The Center is currently closed to the public for renovations, but we are still hard at work saving animals. Shop online to support our life-saving work! Due to precautions we are taking to keep our team safe and healthy, orders may take slightly longer than usual be processed.

Black crew-neck sweatshirt featuring design with 10 sea lion profiles in white, gray, tan, and brown on front. Text "The Marine Mammal Center Sausalito, California" beneath image.

Decade Crew-Neck Sweatshirt

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Limited Edition!

Our one-of-a-kind Decade Design, initially created in honor of The Marine Mammal Center’s 10th anniversary, remains our most popular design over 30 years later. Featuring the side profiles of ten regal sea lions, this classic is sure to draw compliments.


  • 90% cotton, 10% polyester.
  • Printed by a local small business in San Rafael, CA.
  • Crew-neck sweatshirt, black.
  • Adult unisex sizes S-XXL.
  • Note: this sweatshirt tends to run slightly large. Size down if you prefer a tighter fit.