https://a.aliexpress.com/_dUgMnTR
I repeat i use these on blon's. Don't know fitment on urbanfun's.
I know it sounds bizar, but if you look at it technical i don't think it is that stupid.
I use a really smalle squeeze bottle.
Put thé tiniest drop on thé tips and massage tip with my fingers, then insert them. It helps ME in a few ways, thé fitment and therefor the bass is better, it goes in my ear better, it makes it easyer for me to wear them for long sessions, and i have dry skin in my ears and it helps for that to. Win,win,win,win,win.
And i don't mind some sarcasme and i do like a good laugh so