As with most highlighter, the pen is lightweight yet it feels solid and well-balanced. There is an inner black sleeve in the cap and the pen body is tapered and has some flame pattern going on, the pattern reminds me of that MTV show Pimp My Ride (aka. Renovate My Car so Looks Like it Belongs to a Gangster) and I am not sure how I feel about it.
Writing sample with Diamine Ink - No smearing and a completely clean removal! Overall: It's cool but I don't really see the point (as least that's coming from a person who rarely uses highlighter to start with).