A Vape pen is the natural progression from a cigalike or disposable vape kit, slightly larger but also providing better performance. Generally, these are still quite compact these will fit comfortably in the hand. As well as being refillable, a vape pen will have a longer battery life than a “cigalike” (although the capacity will still be restricted due to the small size of the device) and will have replaceable coils or cartridges.
Vape pens will have a larger coil than a cigalike with lower ”ohms” which enables them to produce more flavour and a larger hit. E-liquids with a higher VG rating can be used in vape pens.