Great upgrade to the 2019 version, includes bell cap and standard window but is not resilient against aggressive liquids. Good news! It is downward compatible so I recommend picking up the “fire” versions of the Kayfun lite bell cap and window and they work great! Waiting on my Dani 25 to come in but have been using the Kayfun for over a year now and have experienced ZERO issues… I got tired of spending $30 - $40 on Chinese garbage that mainstream pushes and wanted something that I could purchase replacement items for long term usage and I am not disappointed and neither will you if you pick one up. I am considering snatching a Kayfun X soon. Couldn’t be happier.