Peeking Through
Sometimes, it’s not until an item of clothing is worn in real life, on a real person, that problems become apparent. The material gets tested, fit and size get tested, washing instructions are written, but no one pops the top under a hoody to see what it looks like then. We can see why they wouldn’t think it’s necessary.
However, as this picture shows, it’s definitely necessary. These two particularly-placed bobbles have an interesting effect when the shirt is under a jumper. I wouldn’t risk wearing this shirt underneath a jacket, or I just wouldn’t buy it in the first place. Another design that wasn’t thought through.