Windbot said..
Strange isn't it, I went to their website and they didn't offer any more information there either.
Zips are a really bad idea. They've got the least strength and they're putting it in the highest loaded spot.
Years ago, we made headsails with a zip across the foot. So you could swap between a smaller sail. It works, but you need to really beef up that section & the zip can't take load. Class 40's used to do the same with an A2/4. Zip across the foot, but this doesn't look anywhere near like that.
Not withstanding the screaming error - $4,700 AUD for a 7m.. Gonna be a no from me dog.