Convertible back seat help please

Thanks for sharing pics... thought mine was original!? Never knew this.
The one I have actually fits very tight and secure- and I really like the way it wraps around back panel.
Looking at different pics online- it looks like there are some different variations out there.
Eventually will need new one when I put on new top... Looks like I will need to delete the one snap if I buy re-pop or have to have one made.