Ruggedized - doesn't the word just conjur up images of a tiger eating a Toughbook?
When I received the J4M headphones from JLab, I was unsure of how "rugged" an in-ear headphone could actually be. So, I decided to treat them less than, shall we say, "gently" over the last few weeks.
Now, it's not like I've gone dunking them in water or buried them in sand at the beach - that kind of behavior is at your own risk. But, I can say the J4M is a tough little piece of kit that won't disappoint in the durability department.