Our fun Rockhopper Penguins T-shirt features Rockhoppers waddling and looking cool.  This wonderful, 100% cotton, hand-tie dyed, yellow T- shirt by The Mountain may be one of the most adorable and unique penguin shirts to waddle down the ice trail in a long time. The shirt is pre-washed and pre-shrunk, 100% cotton, screen printed using safe, water based inks. Hand dyed and printed in the USA.  Available in sizes M - XXL