Measuring 274mm from end to end the Nepton 240M is average size for a 240mm AIO, At 27mm thick it's also neither particularly thick nor skinny in any especial way. In fact, it's suspiciously almost identical in size to the Corsair H100i which measures 275mm long by 27mm deep. Fin spacing is rather open, as you can see from the image below right where it's actually possible to see the tubing and cold head through the radiator. The cowling has mounting holes on both sides for a pair of 120mm fans, enabling a push pull set up to be achieved if so desired.
The tubing is of the corrugated variety, and while this might not look as attractive as the rubber type hosing it does tend to resist kinking slightly better and exhibits equal levels of flexibility.
The tubing enters the pump cold plate assembly by means of two 90 degree junctions. These junctions, although stiff to move can be swivelled quite considerably in either direction which will of course aid installation and further reduce kinking.
The Cooler Master Logo is depicted on top of the contact plate. The logo lights up white, but unlike other manufacturers kit is not RGB controllable. Still, at least the contact plate is large enough to enable the 240M to be mounted effectively on even the biggest CPUs out there.