Penguin apparel splits into two camps, and both are worth a look: the subtle (a small embroidered penguin, a tonal tuxedo print) and the loud (full-front graphics, pun slogans, all-over prints). Which one you buy depends entirely on the wearer.
The subtle shelf
A small chest graphic or a minimalist line-drawing penguin reads as a normal nice shirt that happens to have a penguin on it. These are the pieces people reach for on a regular day. Great for someone who likes the animal but does not want to announce it.
The loud shelf
Graphic tees with puns ("waddle you do about it"), cartoon penguins doing human things, and novelty socks are where the fun lives. Socks in particular are the best value in the whole category — cheap, wearable and guaranteed to get a comment.
Browse the full penguin apparel collection to see both ends of the spectrum.
Fit and fabric notes
Check the size chart — graphic tees vary a lot between brands. For hoodies, look at the fabric weight if it is listed; a heavier fleece holds its shape better. And for gifts, when between sizes, size up: a slightly roomy tee is safer than a snug one.