Fizik Antares model differences

Searching eBay for a replacement to my scuffed 2014 fizik Antares saddle, trouble being there seems to be a few variants and I’m not sure what mine is. It came with my Canyon SL 9.0 bought in 2014.
What are the differences between the R3 and R5?
Thanks
What are the differences between the R3 and R5?
Thanks
Trainer Road Blog: https://hitthesweetspot.home.blog/
Cycling blog: https://harderfasterlonger.wordpress.com/
Blog: https://supermurphtt2015.wordpress.com/
TCTP: https://supermurph.wordpress.com/
Cycling blog: https://harderfasterlonger.wordpress.com/
Blog: https://supermurphtt2015.wordpress.com/
TCTP: https://supermurph.wordpress.com/
0
Posts
Cycling blog: https://harderfasterlonger.wordpress.com/
Blog: https://supermurphtt2015.wordpress.com/
TCTP: https://supermurph.wordpress.com/