64/65 system 5 equal what in a system4

[B Murr]

Hi

Anyone know what a system 5 size 64/65 would equate to in a system 4?

 

[wildbeeste]

Hi

Anyone know what a system 5 size 64/65 would equate to in a system 4?

err size 64/65 maybe???

 

[B Murr]

I only ask because someone is selling a xl system 4 and says there are no numbers on it. I'd too would have thought there would be the same sizing system as the system 5 so thought it a bit strange.