vinyl thicknesses for maintaining larger fluke designs?

[SirenGita]

Do you awesome merCrafters have any suggestions on types of vinyl for fluke shapes larger than the monofin, such as rounded shapes, or something like swimtails does with their betta flukes?

I have some cool things in the works coming in a few months if i can bust out the last few material sources

[Mermaid Jaffa]

Shelf liner. You can use any thickness. It just depends on how much softness you want in the tail. I call it softness, that flowing, traily look.

[SirenGita]

Ty! I was looking at the shelf liner online and its pretty affordable I'm probably going to use it in my fins too.