A fantastic and extremely rare piece from the Isle of Wight Studio of Michael Harris in the 'Undercliff' design.
The 'Undercliff' range was designed in a team effort by Michael, Elizabeth, Jonathan and Timothy Harris and this design was initially produced between 1987 and 2012.
This flask perfume bottle is signed 'Timothy Harris Isle Of Wight Glass 2018' and appears to be a specially made piece produced at the Arreton Barns Studio.

There are examples of this design on page 110-111 of the Mark Hill book on Michael Harris Glass.
It is 12.0 cm tall with stopper and 8cm across.
The Isle of Wight Glass Museum website also has an example of the very same design of perfume bottle.
The base is flat polished, fully signed and dated 2018.
The condition is excellent with no issues to both bottle and stopper.
A very special collectors piece.
Please check out my other listings for more Studio/Art Glass, which I will be adding to in the coming days.
Good luck!